Average Weather in September in Texarkana Texas, United States
Daily high temperatures decrease by 9°F, from 91°F to 82°F, rarely falling below 72°F or exceeding 98°F.
Daily low temperatures decrease by 10°F, from 71°F to 61°F, rarely falling below 50°F or exceeding 76°F.
For reference, on July 26, the hottest day of the year, temperatures in Texarkana typically range from 74°F to 93°F, while on January 7, the coldest day of the year, they range from 37°F to 54°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
Ar Rudayyif, Tunisia (5,566 miles away); Açıkdere, Turkey (6,662 miles); and Huotong, China (7,737 miles) are the far-away foreign places with temperatures most similar to Texarkana (view comparison).
The month of September in Texarkana experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 32% throughout the month.
The clearest day of the month is September 30, with clear, mostly clear, or partly cloudy conditions 70% of the time.
For reference, on February 16, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 49%, while on October 5, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 71%.
Cloud Cover Categories in September
A wet day is one with at least 0.04 inches of liquid or liquid-equivalent precipitation. In Texarkana, the chance of a wet day over the course of September is gradually decreasing, starting the month at 25% and ending it at 22%.
For reference, the year's highest daily chance of a wet day is 38% on May 16, and its lowest chance is 21% on September 20.
Probability of Precipitation in September
The average sliding 31-day rainfall during September in Texarkana is rapidly increasing, starting the month at 2.5 inches, when it rarely exceeds 5.6 inches or falls below 0.6 inches, and ending the month at 3.7 inches, when it rarely exceeds 6.9 inches or falls below 0.9 inches.
Average Monthly Rainfall in September
Over the course of September in Texarkana, the length of the day is decreasing. From the start to the end of the month, the length of the day decreases by 59 minutes, implying an average daily decrease of 2 minutes, 2 seconds, and weekly decrease of 14 minutes, 16 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, 51 minutes of daylight.
Hours of Daylight and Twilight in September
The earliest sunrise of the month in Texarkana is 6:50 AM on September 1 and the latest sunrise is 20 minutes later at 7:09 AM on September 30.
The latest sunset is 7:41 PM on September 1 and the earliest sunset is 40 minutes earlier at 7:01 PM on September 30.
Daylight saving time is observed in Texarkana during 2018, 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 6:06 AM and sets 14 hours, 22 minutes later, at 8:29 PM, while on December 21, the shortest day of the year, it rises at 7:16 AM and sets 9 hours, 56 minutes later, at 5:12 PM.
Sunrise & Sunset with Twilight in September
The chance that a given day will be muggy in Texarkana is very rapidly decreasing during September, falling from 71% to 31% over the course of the month.
For reference, on July 22, the muggiest day of the year, there are muggy conditions 91% of the time, while on January 20, 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 Texarkana is gradually increasing during September, increasing from 4.9 miles per hour to 5.4 miles per hour over the course of the month.
For reference, on April 1, the windiest day of the year, the daily average wind speed is 7.0 miles per hour, while on August 2, the calmest day of the year, the daily average wind speed is 4.6 miles per hour.
Average Wind Speed in September
Wind Direction in September
The growing season in Texarkana typically lasts for 8.6 months (263 days), from around March 4 to around November 22, rarely starting before February 7 or after March 29, and rarely ending before November 2 or after December 12.
The month of September in Texarkana 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 Texarkana are rapidly increasing during September, increasing by 731°F, from 4,352°F to 5,083°F, over the course of the month.
Growing Degree Days in September
The average daily incident shortwave solar energy in Texarkana is gradually decreasing during September, falling by 0.7 kWh, from 5.8 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 Texarkana are 33.425 deg latitude, -94.048 deg longitude, and 315 ft elevation.
The topography within 2 miles of Texarkana contains only modest variations in elevation, with a maximum elevation change of 125 feet and an average elevation above sea level of 310 feet. Within 10 miles also contains only modest variations in elevation (315 feet). Within 50 miles contains only modest variations in elevation (617 feet).
The area within 2 miles of Texarkana is covered by artificial surfaces (98%), within 10 miles by cropland (51%) and trees (22%), and within 50 miles by trees (49%) and cropland (36%).
This report illustrates the typical weather in Texarkana 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 5 weather stations near enough to contribute to our estimation of the temperature and dew point in Texarkana.
For each station, the records are corrected for the elevation difference between that station and Texarkana 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 Texarkana is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Texarkana and a given station.
The stations contributing to this reconstruction are: Texarkana Regional Airport (95%, 5.0 kilometers, northeast); Mount Pleasant, Mount Pleasant Regional Airport (1.3%, 93 kilometers, southwest); Clarksville, Clarksville/Red River County-J D Trissell Field Airport (1.2%, 96 kilometers, west); Shreveport Downtown Airport (1.1%, 102 kilometers, south); and Harrison County Airport (1.1%, 104 kilometers, south).
Time zones for aiports and weather stations are provided by AskGeo.com .