Average Weather in September in Tallassee Alabama, United States
In Tallassee, the month of September is characterized by falling daily high temperatures, with daily highs decreasing by 7°F, from 89°F to 82°F over the course of the month, and rarely exceeding 95°F or dropping below 74°F.
Daily low temperatures decrease by 9°F, from 71°F to 62°F, rarely falling below 52°F or exceeding 75°F.
For reference, on July 22, the hottest day of the year, temperatures in Tallassee typically range from 73°F to 91°F, while on January 17, the coldest day of the year, they range from 39°F to 58°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 Tallassee experiences gradually decreasing cloud cover, with the percentage of time that the sky is overcast or mostly cloudy decreasing from 39% to 35%.
The clearest day of the month is September 23, with clear, mostly clear, or partly cloudy conditions 65% of the time.
For reference, on January 3, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 52%, while on October 8, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 67%.
Cloud Cover in September
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Tallassee, the chance of a wet day over the course of September is very rapidly decreasing, starting the month at 30% and ending it at 20%.
For reference, the year's highest daily chance of a wet day is 46% on July 18, and its lowest chance is 18% on October 15.
Probability of Precipitation in September
The average sliding 31-day rainfall during September in Tallassee is essentially constant, remaining about 2.9 inches throughout, and rarely exceeding 6.4 inches or falling below 0.7 inches.
Average Monthly Rainfall in September
Over the course of September in Tallassee, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 57 minutes, implying an average daily decrease of 1 minute, 58 seconds, and weekly decrease of 13 minutes, 47 seconds.
The shortest day of the month is September 30, with 11 hours, 52 minutes of daylight and the longest day is September 1, with 12 hours, 49 minutes of daylight.
Hours of Daylight and Twilight in September
The earliest sunrise of the month in Tallassee is 6:18 AM on September 1 and the latest sunrise is 19 minutes later at 6:37 AM on September 30.
The latest sunset is 7:07 PM on September 1 and the earliest sunset is 39 minutes earlier at 6:29 PM on September 30.
Daylight saving time is observed in Tallassee during 2017, 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 5:36 AM and sets 14 hours, 18 minutes later, at 7:54 PM, while on December 21, the shortest day of the year, it rises at 6:41 AM and sets 10 hours, 1 minute later, at 4:42 PM.
Sunrise & Sunset with Twilight in September
The chance that a given day will be muggy in Tallassee is very rapidly decreasing during September, falling from 81% to 37% over the course of the month.
For reference, on July 24, the muggiest day of the year, there are muggy conditions 95% of the time, while on January 24, the least muggy day of the year, there are muggy conditions 0% of the time.
Humidity Comfort Levels in September
The average hourly wind speed in Tallassee is essentially constant during September, remaining within 0.2 miles per hour of 2.5 miles per hour throughout.
For reference, on March 8, the windiest day of the year, the daily average wind speed is 3.3 miles per hour, while on August 8, the calmest day of the year, the daily average wind speed is 2.1 miles per hour.
Average Wind Speed in September
Wind Direction in September
The average daily incident shortwave solar energy in Tallassee is gradually decreasing during September, falling by 0.6 kWh, from 5.7 kWh to 5.1 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 Tallassee are 32.536 deg latitude, -85.893 deg longitude, and 328 ft elevation.
The topography within 2 miles of Tallassee contains only modest variations in elevation, with a maximum elevation change of 259 feet and an average elevation above sea level of 325 feet. Within 10 miles contains only modest variations in elevation (571 feet). Within 50 miles contains significant variations in elevation (1,706 feet).
The area within 2 miles of Tallassee is covered by trees (43%), artificial surfaces (31%), and cropland (17%), within 10 miles by trees (66%) and cropland (30%), and within 50 miles by trees (76%) and cropland (16%).
This report illustrates the typical weather in Tallassee 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 Tallassee.
For each station, the records are corrected for the elevation difference between that station and Tallassee 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 Tallassee is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Tallassee and a given station.
The stations contributing to this reconstruction are: Thomas C Russell Field (30%, 43 kilometers, north); Auburn-Opelika Robert G Pitts Airport (28%, 44 kilometers, east); Maxwell Air Force Base / Montgomery (28%, 46 kilometers, west); and Troy Municipal Airport (13%, 76 kilometers, south).
Time zones for aiports and weather stations are provided by AskGeo.com .