Galveston County (Galveston)
September
Weather in Galveston County, Texas for September 2026
Your guide to Galveston County weather in September - trends and predictions
So far, September 2026 in Galveston County is slightly warmer than the historical average by 0.9 °F.
The forecast for the next days in Galveston County predicts temperatures to be around 30 °F, close to the historical average.
In general, the average temperature in Galveston County at the beginning of September is 30 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 29.4 °F by the end of September.
The climate of Galveston County in September is notably wet, with an average of 13 rainy days, and a total of 185.1 mm of precipitation.
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Temperatures
Rain 🌧️
More
17
Dry days
13
Rainy days
0
Snow days
29°/26°
Temperatures
23 km/h
Avg max wind
74 %
Avg humidity
Galveston County Weather September
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Temperatures trend during September in Galveston County
See the weather trend as well as the moving average line
September weather in Galveston County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Light rain shower | 29° /25° | 26.4 mm | 4 | |
| Sept. 2 |  Moderate or heavy rain shower | 31° /27° | 12 mm | 5 | |
| Sept. 3 |  Sunny | 31° /27° | 0 mm | 5 | |
| Sept. 4 | Sunny | 29° /26° | 119.1 mm | 6 | |
| Sept. 5 |  Overcast | 29° /26° | 462.6 mm | 4 | |
| Sept. 6 |  Moderate or heavy rain with thunder | 30° /26° | 64.5 mm | 5 | |
| Sept. 7 |  Thundery outbreaks possible | 31° /26° | 363.3 mm | 7 | |
| Sept. 8 | Sunny | 30° /26° | 0 mm | 7 | |
| Sept. 9 | Sunny | 29° /24° | 1.7 mm | 7 | |
| Sept. 10 | Moderate or heavy rain shower | 28° /25° | 8.9 mm | 6 | |
| Sept. 11 | Moderate or heavy rain shower | 28° /25° | 41.8 mm | 5 | |
| Sept. 12 | Patchy rain possible | 30° /26° | 47.6 mm | 6 | |
| Sept. 13 | Sunny | 29° /26° | 3.1 mm | 8 | |
| Sept. 14 | Sunny | 29° /27° | 2.4 mm | 8 | |
| Sept. 15 | Sunny | 30° /27° | 0.2 mm | 7 | |
| Sept. 16 | Sunny | 29° /26° | 0 mm | 5 | |
| Sept. 17 | Light rain shower | 31° /30° | 20.8 mm | 8 | |
| Sept. 18 | Sunny | 31° /29° | 0.1 mm | 7 | |
| Sept. 19 | Sunny | 30° /29° | 0 mm | 7 | |
| Sept. 20 | Sunny | 30° /29° | 1.4 mm | 7 | |
| Sept. 21 | Overcast | 30° /28° | 2.8 mm | 6 | |
| Sept. 22 | Sunny | 29° /29° | 0.9 mm | 7 | |
| Sept. 23 | Sunny | 29° /29° | 0 mm | 7 | |
| Sept. 24 | Sunny | 30° /28° | 0 mm | 7 | |
| Sept. 25 | Sunny | 30° /26° | 0 mm | 7 | |
| Sept. 26 | Sunny | 29° /23° | 0 mm | 7 | |
| Sept. 27 | Sunny | 27° /24° | 0 mm | 7 | |
| Sept. 28 | Sunny | 29° /25° | 0 mm | 7 | |
| Sept. 29 | Sunny | 30° /25° | 0 mm | 8 | |
| Sept. 30 | Overcast | 31° /26° | 0 mm | 8 | |
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Important Notice
Our weather forecast for Galveston 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 Galveston County forecast closer to your planned date for the most up-to-date weather information.
Change Month
Galveston County in September - FAQ
What are the expected maximum and minimum temperatures in Galveston County during September?
During September, expect a variety of temperatures with highs around 29° and lows near 26°, suitable for diverse activities and preferences.
How much rainfall should be expected in Galveston County during September?
Significant rainfall exceeding 185.1 mm is expected in Galveston County during September, occurring over more than 13 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Galveston County during September?
The average wind speed in Galveston County during September is 23 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Galveston County
Explore the daily rainfall trends and prepare for Galveston Countys September weather 💧
Typically, Galveston County has 13 rainy days in September with a total of 185.1 mm of rainfall.
UV exposure in Galveston County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Galveston County?Get accurate weather forecasts for Galveston County, located at latitude 29.301 and longitude -94.798. Stay updated with localized weather information tailored for Galveston County.
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