Maine weather in september.Weather in September in Maine

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Maine weather in september 













































   

 

The Weather and Climate in Maine



  Average rainfall. It may seem unintuitive, but there is a magic to Maine's beaches in the winter, so bundle up for an oceanside stroll along the deserted sands. The day, twilights civil, nautical, and astronomicaland night are indicated by the color bands from yellow to gray. Weather in September Septemberthe first month of the autumn in Portlandis also нажмите для деталей enjoyable month, with an average temperature varying between Please note that maine weather in september source's contribution is adjusted for elevation and the maine weather in september change present in the MERRA-2 data.  


Best Time to Visit Maine [MONTH-BY-MONTH GUIDE] - Roaming the Americas.Portland September Weather, Average Temperature (Maine, United States) - Weather Spark



 

The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on September. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day.

A wet day is one with at least 0. To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding day period centered around each day.

The average sliding day rainfall during September in Bar Harbor is rapidly increasing , starting the month at 2. Over the course of September in Bar Harbor, the length of the day is rapidly decreasing. From the start to the end of the month, the length of the day decreases by 1 hour, 28 minutes , implying an average daily decrease of 3 minutes, 1 second , and weekly decrease of 21 minutes, 9 seconds.

The shortest day of the month is September 30 , with 11 hours, 46 minutes of daylight and the longest day is September 1 , with 13 hours, 14 minutes of daylight. Daylight saving time is observed in Bar Harbor during , but it neither starts nor ends during September, so the entire month is in daylight saving time.

For reference, on June 21 , the longest day of the year, the Sun rises at AM and sets 15 hours, 32 minutes later, at PM , while on December 21 , the shortest day of the year, it rises at AM and sets 8 hours, 50 minutes later, at PM. The figure below presents a compact representation of the sun's elevation the angle of the sun above the horizon and azimuth its compass bearing for every hour of every day in the reporting period. The horizontal axis is the day of the year and the vertical axis is the hour of the day.

For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment. The black isolines are contours of constant solar elevation. The figure below presents a compact representation of key lunar data for September The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars new Moons and blue bars full Moons indicate key Moon phases.

The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid. Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night. This section discusses the wide-area hourly average wind vector speed and direction at 10 meters above the ground.

The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed in Bar Harbor is increasing during September, increasing from 7. For reference, on January 13 , the windiest day of the year, the daily average wind speed is Bar Harbor is located near a large body of water e. This section reports on the wide-area average surface temperature of that water. The growing season in Bar Harbor typically lasts for 5. Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents.

Shortwave radiation includes visible light and ultraviolet radiation. The average daily incident shortwave solar energy in Bar Harbor is decreasing during September, falling by 1. For the purposes of this report, the geographical coordinates of Bar Harbor are The topography within 2 miles of Bar Harbor contains significant variations in elevation, with a maximum elevation change of feet and an average elevation above sea level of 87 feet.

Within 10 miles contains significant variations in elevation 1, feet. Within 50 miles also contains very significant variations in elevation 1, feet. This report illustrates the typical weather in Bar Harbor, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, to December 31, There are 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Bar Harbor. For each station, the records are corrected for the elevation difference between that station and Bar Harbor according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations.

The estimated value at Bar Harbor is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Bar Harbor and a given station. Stephen, N. CWSS, 4. CWVU, 2. To get a sense of how much these sources agree with each other, you can view a comparison of Bar Harbor and the stations that contribute to our estimates of its temperature history and climate. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data.

All data relating to the Sun's position e. This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a kilometer grid. Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database. Time zones for airports and weather stations are provided by AskGeo. The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose.

Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site. We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series.

While having the tremendous advantages of temporal and spatial completeness, these reconstructions: 1 are based on computer models that may have model-based errors, 2 are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and 3 have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader. Please review our full terms contained on our Terms of Service page.

You're permitted to use this graph as long as you provide prominent attribution with a link back close to the use of the graph. For print usage, please acquire a license. Full Year. Spring Summer Fall Winter. History: The daily average high red line and low blue line temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures. The average hourly temperature, color coded into bands.

The shaded overlays indicate night and civil twilight. Compare Bar Harbor to another city:. The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds.

The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed both rain and snow fell in the same day.

The average rainfall solid line accumulated over the course of a sliding day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The thin dotted line is the corresponding average snowfall.

The number of hours during which the Sun is visible black line. From bottom most yellow to top most gray , the color bands indicate: full daylight, twilight civil, nautical, and astronomical , and full night. The solar day over the course of September.

From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. The day, twilights civil, nautical, and astronomical , and night are indicated by the color bands from yellow to gray. Solar elevation and azimuth over the course of September The black lines are lines of constant solar elevation the angle of the sun above the horizon, in degrees.

The background color fills indicate the azimuth the compass bearing of the sun. The lightly tinted areas at the boundaries of the cardinal compass points indicate the implied intermediate directions northeast, southeast, southwest, and northwest.

The time in which the moon is above the horizon light blue area , with new moons dark gray lines and full moons blue lines indicated.

The percentage of time spent at various humidity comfort levels, categorized by dew point. The average of mean hourly wind speeds dark gray line , with 25th to 75th and 10th to 90th percentile bands. The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than 1.

The lightly tinted areas at the boundaries are the percentage of hours spent in the implied intermediate directions northeast, southeast, southwest, and northwest. The daily average water temperature purple line , with 25th to 75th and 10th to 90th percentile bands. The percentage of time spent in various temperature bands.

The black line is the percentage chance that a given day is within the growing season. The average growing degree days accumulated over the course of September, with 25th to 75th and 10th to 90th percentile bands. The average daily shortwave solar energy reaching the ground per square meter orange line , with 25th to 75th and 10th to 90th percentile bands. Temperature and Dew Point There are 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Bar Harbor.

Data Download. License Charts. Precipitation A wet day is one with at least 0. Rainfall To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding day period centered around each day. Sun Over the course of September in Bar Harbor, the length of the day is rapidly decreasing. Moon The figure below presents a compact representation of key lunar data for September

   

 

Maine weather in september -



   

Shortwave radiation includes visible light and ultraviolet radiation. The average daily incident shortwave solar energy in Bar Harbor is decreasing during September, falling by 1. For the purposes of this report, the geographical coordinates of Bar Harbor are The topography within 2 miles of Bar Harbor contains significant variations in elevation, with a maximum elevation change of feet and an average elevation above sea level of 87 feet.

Within 10 miles contains significant variations in elevation 1, feet. Within 50 miles also contains very significant variations in elevation 1, feet. This report illustrates the typical weather in Bar Harbor, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, to December 31, There are 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Bar Harbor.

For each station, the records are corrected for the elevation difference between that station and Bar Harbor according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations. The estimated value at Bar Harbor is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Bar Harbor and a given station.

Stephen, N. CWSS, 4. CWVU, 2. To get a sense of how much these sources agree with each other, you can view a comparison of Bar Harbor and the stations that contribute to our estimates of its temperature history and climate. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data. All data relating to the Sun's position e.

This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a kilometer grid. Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database. Time zones for airports and weather stations are provided by AskGeo. The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose.

Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site. We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: 1 are based on computer models that may have model-based errors, 2 are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and 3 have particular difficulty with the weather in some coastal areas, especially small islands.

We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader. Please review our full terms contained on our Terms of Service page. You're permitted to use this graph as long as you provide prominent attribution with a link back close to the use of the graph.

For print usage, please acquire a license. Full Year. Spring Summer Fall Winter. History: The daily average high red line and low blue line temperature, with 25th to 75th and 10th to 90th percentile bands. The thin dotted lines are the corresponding average perceived temperatures. The average hourly temperature, color coded into bands.

The shaded overlays indicate night and civil twilight. Compare Bar Harbor to another city:. The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds. The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed both rain and snow fell in the same day. The average rainfall solid line accumulated over the course of a sliding day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands.

The thin dotted line is the corresponding average snowfall. The number of hours during which the Sun is visible black line. From bottom most yellow to top most gray , the color bands indicate: full daylight, twilight civil, nautical, and astronomical , and full night. The solar day over the course of September.

From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight.

The day, twilights civil, nautical, and astronomical , and night are indicated by the color bands from yellow to gray. Solar elevation and azimuth over the course of September The black lines are lines of constant solar elevation the angle of the sun above the horizon, in degrees.

The background color fills indicate the azimuth the compass bearing of the sun. To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding day period centered around each day.

The average sliding day rainfall during September in Portland is increasing , starting the month at 3. Over the course of September in Portland, the length of the day is rapidly decreasing.

From the start to the end of the month, the length of the day decreases by 1 hour, 25 minutes , implying an average daily decrease of 2 minutes, 57 seconds , and weekly decrease of 20 minutes, 37 seconds. The shortest day of the month is September 30 , with 11 hours, 46 minutes of daylight and the longest day is September 1 , with 13 hours, 12 minutes of daylight. The earliest sunrise of the month in Portland is AM on September 1 and the latest sunrise is 33 minutes later at AM on September Daylight saving time is observed in Portland during , but it neither starts nor ends during September, so the entire month is in daylight saving time.

For reference, on June 21 , the longest day of the year, the Sun rises at AM and sets 15 hours, 27 minutes later, at PM , while on December 21 , the shortest day of the year, it rises at AM and sets 8 hours, 56 minutes later, at PM. The figure below presents a compact representation of the sun's elevation the angle of the sun above the horizon and azimuth its compass bearing for every hour of every day in the reporting period.

The horizontal axis is the day of the year and the vertical axis is the hour of the day. For a given day and hour of that day, the background color indicates the azimuth of the sun at that moment.

The black isolines are contours of constant solar elevation. The figure below presents a compact representation of key lunar data for September The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The vertical gray bars new Moons and blue bars full Moons indicate key Moon phases. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon.

We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Lower dew points feel drier and higher dew points feel more humid.

Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night.

This section discusses the wide-area hourly average wind vector speed and direction at 10 meters above the ground. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages.

The average hourly wind speed in Portland is increasing during September, increasing from 5. For reference, on February 20 , the windiest day of the year, the daily average wind speed is Portland is located near a large body of water e.

This section reports on the wide-area average surface temperature of that water. The growing season in Portland typically lasts for 5. Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature.

This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents.

Shortwave radiation includes visible light and ultraviolet radiation. The average daily incident shortwave solar energy in Portland is decreasing during September, falling by 1. For the purposes of this report, the geographical coordinates of Portland are The topography within 2 miles of Portland contains only modest variations in elevation, with a maximum elevation change of feet and an average elevation above sea level of 23 feet.

Within 10 miles contains only modest variations in elevation feet. Within 50 miles contains significant variations in elevation 2, feet. This report illustrates the typical weather in Portland, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, to December 31, There are 3 weather stations near enough to contribute to our estimation of the temperature and dew point in Portland.

For each station, the records are corrected for the elevation difference between that station and Portland according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations. The estimated value at Portland is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Portland and a given station.

To get a sense of how much these sources agree with each other, you can view a comparison of Portland and the stations that contribute to our estimates of its temperature history and climate. Please note that each source's contribution is adjusted for elevation and the relative change present in the MERRA-2 data. All data relating to the Sun's position e.

This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a kilometer grid.

Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database. Time zones for airports and weather stations are provided by AskGeo. The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. Weather data is prone to errors, outages, and other defects. We assume no responsibility for any decisions made on the basis of the content presented on this site.

We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series.



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