Average Weather in September in Fors France
Daily high temperatures decrease by 7°F, from 75°F to 69°F, rarely falling below 60°F or exceeding 86°F.
Daily low temperatures decrease by 4°F, from 56°F to 51°F, rarely falling below 44°F or exceeding 63°F.
For reference, on August 2, the hottest day of the year, temperatures in Fors typically range from 59°F to 79°F, while on February 7, the coldest day of the year, they range from 36°F to 48°F.
Average High and Low Temperature in September
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.
Average Hourly Temperature in September
The month of September in Fors experiences increasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy increasing from 38% to 47%.
The clearest day of the month is September 1, with clear, mostly clear, or partly cloudy conditions 62% of the time.
For reference, on January 5, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 69%, while on July 23, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 70%.
Cloud Cover Categories in September
0% clear 20% mostly clear 40% partly cloudy 60% mostly cloudy 80% overcast 100%
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Fors, the chance of a wet day over the course of September is rapidly increasing, starting the month at 19% and ending it at 26%.
For reference, the year's highest daily chance of a wet day is 34% on December 29, and its lowest chance is 16% on August 26.
Probability of Precipitation in September
The average sliding 31-day rainfall during September in Fors is increasing, starting the month at 1.5 inches, when it rarely exceeds 3.2 inches or falls below 0.4 inches, and ending the month at 2.2 inches, when it rarely exceeds 4.6 inches or falls below 0.5 inches.
Average Monthly Rainfall in September
Over the course of September in Fors, 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, 34 minutes, implying an average daily decrease of 3 minutes, 13 seconds, and weekly decrease of 22 minutes, 34 seconds.
The shortest day of the month is September 30, with 11 hours, 44 minutes of daylight and the longest day is September 1, with 13 hours, 17 minutes of daylight.
Hours of Daylight and Twilight in September
The earliest sunrise of the month in Fors is 7:22 AM on September 1 and the latest sunrise is 37 minutes later at 7:59 AM on September 30.
The latest sunset is 8:39 PM on September 1 and the earliest sunset is 57 minutes earlier at 7:42 PM on September 30.
Daylight saving time is observed in Fors during 2020, but it neither starts nor ends during September, so the entire month is in daylight saving time.
For reference, on June 20, the longest day of the year, the Sun rises at 6:09 AM and sets 15 hours, 47 minutes later, at 9:56 PM, while on December 21, the shortest day of the year, it rises at 8:41 AM and sets 8 hours, 37 minutes later, at 5:18 PM.
Sunrise & Sunset with Twilight and Daylight Saving Time in September
The chance that a given day will be muggy in Fors is gradually decreasing during September, falling from 4% to 1% over the course of the month.
For reference, on August 6, the muggiest day of the year, there are muggy conditions 8% of the time, while on November 1, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in September
dry 55°F comfortable 60°F humid 65°F muggy 70°F oppressive 75°F miserable
The average hourly wind speed in Fors is essentially constant during September, remaining within 0.2 miles per hour of 8.9 miles per hour throughout.
For reference, on January 16, the windiest day of the year, the daily average wind speed is 10.9 miles per hour, while on August 4, the calmest day of the year, the daily average wind speed is 8.0 miles per hour.
Average Wind Speed in September
The hourly average wind direction in Fors throughout September is predominantly from the west, with a peak proportion of 37% on September 1.
Wind Direction in September
Fors is located near a large body of water (e.g., ocean, sea, or large lake). This section reports on the wide-area average surface temperature of that water.
The average surface water temperature in Fors is gradually decreasing during September, falling by 3°F, from 68°F to 64°F, over the course of the month.
Average Water Temperature in September
The growing season in Fors typically lasts for 7.7 months (235 days), from around March 29 to around November 19, rarely starting before March 3 or after April 21, and rarely ending before October 23 or after December 21.
The month of September in Fors is reliably fully within the growing season.
Time Spent in Various Temperature Bands and the Growing Season in September
The average accumulated growing degree days in Fors are increasing during September, increasing by 373°F, from 2,050°F to 2,423°F, over the course of the month.
Growing Degree Days in September
The average daily incident shortwave solar energy in Fors is rapidly decreasing during September, falling by 1.7 kWh, from 5.3 kWh to 3.6 kWh, over the course of the month.
Average Daily Incident Shortwave Solar Energy in September
For the purposes of this report, the geographical coordinates of Fors are 46.236 deg latitude, -0.409 deg longitude, and 138 ft elevation.
The topography within 2 miles of Fors contains only modest variations in elevation, with a maximum elevation change of 138 feet and an average elevation above sea level of 147 feet. Within 10 miles also contains only modest variations in elevation (466 feet). Within 50 miles contains only modest variations in elevation (1,004 feet).
The area within 2 miles of Fors is covered by cropland (86%), within 10 miles by cropland (74%), and within 50 miles by cropland (68%) and grassland (12%).
This report illustrates the typical weather in Fors year round, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016.
Temperature and Dew Point
There are 4 weather stations near enough to contribute to our estimation of the temperature and dew point in Fors.
For each station, the records are corrected for the elevation difference between that station and Fors 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 Fors is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Fors and a given station.
The stations contributing to this reconstruction are: Niort-Souché (88%, 8 kilometers, north); La Rochelle – Île de Ré Airport (4.8%, 60 kilometers, west); Cognac-Châteaubernard Air Base (4.3%, 65 kilometers, south); and Angoulême – Cognac International Airport (3.3%, 75 kilometers, southeast).
Time zones for aiports and weather stations are provided by AskGeo.com .