Grayson County (Sherman)
September
Weather in Grayson County, Texas for September 2027
Your guide to Grayson County weather in September - trends and predictions
In general, the average temperature in Grayson County at the beginning of September is 32.6 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 30.2 °C by the end of September.
Grayson County experiences moderate rainfall in September, with an average of 7 rainy days and a total precipitation of 66 mm.
Is September a good time to visit Grayson County? check out the best time to travel to Grayson County page.
✨ Is September a good time to visit Grayson County? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
23
Dry days
7
Rainy days
0
Snow days
33°/21°
Temperatures
19 km/h
Avg max wind
57 %
Avg humidity
Grayson County Weather September
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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
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Patchy rain possible | 34° /24° | 0.7 mm | 8 | |
| Sept. 2 |  Light rain | 32° /24° | 9.5 mm | 8 | |
| Sept. 3 | Patchy rain possible | 30° /22° | 2 mm | 8 | |
| Sept. 4 | Light rain | 33° /21° | 2.6 mm | 8 | |
| Sept. 5 | Patchy rain possible | 34° /22° | 0.2 mm | 8 | |
| Sept. 6 | Patchy rain possible | 33° /21° | 1 mm | 8 | |
| Sept. 7 |  Sunny | 32° /20° | 0 mm | 8 | |
| Sept. 8 | Sunny | 32° /19° | 0 mm | 8 | |
| Sept. 9 | Sunny | 32° /19° | 0 mm | 8 | |
| Sept. 10 | Patchy rain possible | 33° /19° | 1.3 mm | 8 | |
| Sept. 11 | Patchy rain possible | 34° /20° | 0.4 mm | 8 | |
| Sept. 12 |  Partly cloudy | 35° /22° | 0 mm | 8.8 | |
| Sept. 13 | Sunny | 36° /22° | 0 mm | 8 | |
| Sept. 14 | Patchy rain possible | 35° /22° | 0.1 mm | 8 | |
| Sept. 15 |  Cloudy | 34° /23° | 0.4 mm | 8 | |
| Sept. 16 | Partly cloudy | 34° /23° | 0.4 mm | 8.4 | |
| Sept. 17 |  Overcast | 34° /23° | 0.3 mm | 8 | |
| Sept. 18 | Overcast | 35° /24° | 0.1 mm | 8 | |
| Sept. 19 | Patchy rain possible | 35° /23° | 1.4 mm | 7 | |
| Sept. 20 | Partly cloudy | 35° /23° | 0.6 mm | 6 | |
| Sept. 21 | Light rain | 34° /22° | 4.6 mm | 7 | |
| Sept. 22 | Patchy rain possible | 33° /22° | 1 mm | 7.9 | |
| Sept. 23 |  Moderate rain | 30° /22° | 10.9 mm | 6 | |
| Sept. 24 | Moderate rain | 29° /19° | 19.4 mm | 5 | |
| Sept. 25 | Light rain | 29° /18° | 4.6 mm | 5 | |
| Sept. 26 | Sunny | 31° /19° | 0 mm | 6 | |
| Sept. 27 | Sunny | 31° /18° | 0.6 mm | 6 | |
| Sept. 28 | Sunny | 31° /18° | 0.9 mm | 7 | |
| Sept. 29 | Cloudy | 31° /20° | 0.2 mm | 6 | |
| Sept. 30 | Light rain | 30° /20° | 2.5 mm | 5 | |
| 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?
During September, expect a variety of temperatures with highs around 33° and lows near 21°, suitable for diverse activities and preferences.
How much rainfall should be expected in Grayson County during September?
Moderate rainfall is anticipated in Grayson County during September, with a total of 66 mm spread over approximately 7 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 19 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 7 rainy days in September with a total of 66 mm of rainfall.
UV exposure in Grayson County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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