easeweather.com
Grayson County (Sherman)
Akron (OH)Albuquerque (NM)Alexandria (VA)Anaheim (CA)Anchorage (AK)Arlington (VA)Asheville (NC)Atlanta (GA)Atlantic City (NJ)Austin (TX)Baltimore (MD)Baton Rouge (LA)Birmingham (AL)Boston (MA)Bowling Green (KY)Brooklyn (NY)Buffalo (NY)Cape Coral (FL)Charlotte (NC)Chattanooga (TN)Chicago (IL)Cincinnati (OH)Cleveland (OH)Colorado Springs (CO)Columbus (OH)Corpus Christi (TX)Dallas (TX)Dayton (OH)Daytona Beach (FL)Denver (CO)Des Moines (IA)Detroit (MI)El Paso (TX)Fairbanks (AK)Fort Lauderdale (FL)Fort Wayne (IN)Fort Worth (TX)Gatlinburg (TN)Grand Rapids (MI)Harrisburg (PA)Honolulu (HI)Houston (TX)Huntsville (AL)Indianapolis (IN)Jackson (MS)Jacksonville (FL)Juneau (AK)Kansas City (MO)Ketchikan (AK)Key West (FL)Knoxville (TN)Las Vegas (NV)Lexington (KY)Lincoln (NE)Little Rock (AR)Los Angeles (CA)Louisville (KY)Madison (WI)Manhattan (NY)Memphis (TN)Miami (FL)Milwaukee (WI)Minneapolis (MN)Mobile (AL)Montgomery (AL)Nashville (TN)New Orleans (LA)New York City (NY)Newark (NJ)Oklahoma City (OK)Omaha (NE)Orlando (FL)Philadelphia (PA)Phoenix (AZ)Pittsburgh (PA)Portland (OR)Richmond (VA)Sacramento (CA)Salt Lake City (UT)San Antonio (TX)San Diego (CA)San Francisco (CA)San Jose (CA)Savannah (GA)Seattle (WA)Sherman (TX)Sitka (AK)Skagway (AK)Springfield (MO)St. Louis (MO)St. Petersburg (FL)Tallahassee (FL)Tampa (FL)Toledo (OH)Traverse City (MI)Tulsa (OK)Tyler (TX)Vancouver (WA)Virginia Beach (VA)WashingtonWinston-Salem (NC) More Locations
United States weather

Weather in Grayson County, Texas for September 2026

Your guide to Grayson County weather in September - trends and predictions

    Temperatures

  • So far, September 2026 in Grayson County shows a warmer trend than usual by 4.1 °F.

  • The forecast for the next days in Grayson County predicts temperatures to be around 34 °F, close to the historical average.

  • In general, the average temperature in Grayson County at the beginning of September is 33 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 31.3 °F by the end of September.

    • Rain 🌧️

  • Grayson County experiences moderate rainfall in September, with an average of 10 rainy days and a total precipitation of 85.2 mm.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
20
Dry days
Average rainy days
10
Rainy days
Average snowy days
0
Snow days
Average temperatures
31°/20°
Temperatures
Average wind speed
18 km/h
Avg max wind
Average humidity
59 %
Avg humidity

Grayson County Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Heavy rain at times
34°
2
Overcast
33°
3
Heavy rain at times
30°
4
Sunny
33°
5
Patchy rain possible
35°
6
Partly cloudy
33°
7
Sunny
33°
8
Sunny
32°
9
Sunny
32°
10
Sunny
33°
11
Patchy rain possible
34°
12
Partly cloudy
35°
13
Sunny
36°
14
Patchy rain possible
35°
15
Cloudy
35°
16
Partly cloudy
35°
17
Sunny
36°
18
Sunny
37°
19
Sunny
36°
20
Overcast
36°
21
Overcast
35°
22
Sunny
35°
23
Overcast
35°
24
Overcast
30°
25
Sunny
30°
26
Sunny
30°
27
Sunny
30°
28
Sunny
32°
29
Partly cloudy
33°
30
Sunny
34°

Temperatures trend during September in Grayson County

See the weather trend as well as the moving average line

September weather in Grayson County day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
Sept. 1 Heavy rain at times
Heavy rain at times
 34° /23° 0.7 mm 8
Sept. 2 Overcast
Overcast
 33° /23° 9.5 mm 8
Sept. 3 Heavy rain at times
Heavy rain at times
 30° /21° 2 mm 8
Sept. 4 Sunny
Sunny
 33° /20° 2.6 mm 8
Sept. 5 Patchy rain possible
Patchy rain possible
 35° /22° 0.2 mm 8
Sept. 6 Partly cloudy
Partly cloudy
 33° /20° 1 mm 8
Sept. 7 Sunny
Sunny
 33° /20° 0 mm 8
Sept. 8 Sunny
Sunny
 32° /19° 0 mm 8
Sept. 9 Sunny
Sunny
 32° /18° 0 mm 8
Sept. 10 Sunny
Sunny
 33° /19° 1.3 mm 8
Sept. 11 Patchy rain possible
Patchy rain possible
 34° /20° 0.4 mm 8
Sept. 12 Partly cloudy
Partly cloudy
 35° /21° 0 mm 9
Sept. 13 Sunny
Sunny
 36° /22° 0 mm 8
Sept. 14 Patchy rain possible
Patchy rain possible
 35° /22° 0.1 mm 8
Sept. 15 Cloudy
Cloudy
 35° /22° 0.4 mm 8
Sept. 16 Partly cloudy
Partly cloudy
 35° /23° 0.4 mm 9
Sept. 17 Sunny
Sunny
 36° /27° 0 mm 7.7
Sept. 18 Sunny
Sunny
 37° /27° 0 mm 7.9
Sept. 19 Sunny
Sunny
 36° /26° 0 mm 8.3
Sept. 20 Overcast
Overcast
 36° /25° 0 mm 8
Sept. 21 Overcast
Overcast
 35° /24° 2.9 mm 8
Sept. 22 Sunny
Sunny
 35° /23° 5.5 mm 8
Sept. 23 Overcast
Overcast
 35° /25° 0 mm 8
Sept. 24 Overcast
Overcast
 30° /18° 4.6 mm 8
Sept. 25 Sunny
Sunny
 30° /17° 0 mm 8
Sept. 26 Sunny
Sunny
 30° /18° 0 mm 8
Sept. 27 Sunny
Sunny
 30° /17° 0 mm 8
Sept. 28 Sunny
Sunny
 32° /18° 0 mm 8
Sept. 29 Partly cloudy
Partly cloudy
 33° /18° 0 mm 8
Sept. 30 Sunny
Sunny
 34° /18° 0 mm 8
Next
Important Notice
Our weather forecast for Grayson County in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Grayson County forecast closer to your planned date for the most up-to-date weather information.
Change Month
‹
›

Grayson County in September - FAQ

What are the expected maximum and minimum temperatures in Grayson County during September?
Expect warm days with temperatures around 31°, cooling to mild conditions of 20° after sunset. Perfect for those who enjoy warm weather.

How much rainfall should be expected in Grayson County during September?
Moderate rainfall is anticipated in Grayson County during September, with a total of 85.2 mm spread over approximately 10 days. Considering plans for rainy days is advisable.

What are the typical wind conditions in Grayson County during September?
The average wind speed in Grayson County during September is 18 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Grayson County

Explore the daily rainfall trends and prepare for Grayson Countys September weather 💧
Typically, Grayson County has 10 rainy days in September with a total of 85.2 mm of rainfall.

UV exposure in Grayson County during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Top locations in Grayson County
Select a location for an accurate weather forecast
Sherman
More Locations

Quick links

More Grayson County weather pages
You are here
Location coordinates Where is Grayson County?

Get accurate weather forecasts for Grayson County, located at latitude 33.636 and longitude -96.609. Stay updated with localized weather information tailored for Grayson County.

Found a mistake?
We appreciate your attention to details. Tell us here.