Brownsville (TX)
September
Weather in Brownsville, Texas for September 2025
Your guide to Brownsville weather in September - trends and predictions
Until now, September 2025 in Brownsville is slightly cooler than the historical average by -0.6 °F.
The forecast for the next days in Brownsville predicts temperatures to be around 34 °F, close to the historical average.
In general, the average temperature in Brownsville at the beginning of September is 34.6 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 34 °F by the end of September.
The climate of Brownsville in September is notably wet, with an average of 13 rainy days, and a total of 93.4 mm of precipitation.
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Temperatures
Rain 🌧️
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17
Dry days
13
Rainy days
0
Snow days
34°/26°
Temperatures
24 km/h
Avg max wind
71 %
Avg humidity
Brownsville Weather September
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Temperatures trend during September in Brownsville
See the weather trend as well as the moving average line
September weather in Brownsville day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Mist | 35° /26° | 0.5 mm | 7 | |
| Sept. 2 |  Cloudy | 35° /25° | 1.6 mm | 8 | |
| Sept. 3 | Mist | 36° /25° | 4.4 mm | 8 | |
| Sept. 4 | Mist | 35° /26° | 11.3 mm | 8 | |
| Sept. 5 |  Overcast | 34° /26° | 1.5 mm | 7 | |
| Sept. 6 |  Patchy rain possible | 34° /26° | 1.7 mm | 7 | |
| Sept. 7 | Cloudy | 33° /26° | 5.5 mm | 7 | |
| Sept. 8 |  Partly cloudy | 33° /26° | 10.9 mm | 7 | |
| Sept. 9 | Cloudy | 33° /24° | 3.5 mm | 7 | |
| Sept. 10 | Patchy rain possible | 32° /25° | 24.6 mm | 7 | |
| Sept. 11 | Overcast | 34° /25° | 4.3 mm | 7 | |
| Sept. 12 | Partly cloudy | 34° /24° | 0.3 mm | 8 | |
| Sept. 13 | Partly cloudy | 33° /25° | 3.6 mm | 8 | |
| Sept. 14 | Partly cloudy | 34° /25° | 0 mm | 8 | |
| Sept. 15 | Cloudy | 33° /26° | 6.9 mm | 7 | |
| Sept. 16 | Partly cloudy | 33° /25° | 0 mm | 2.3 | |
| Sept. 17 |  Heavy rain | 30° /27° | 49.4 mm | 1.9 | |
| Sept. 18 |  Moderate rain | 32° /25° | 11.7 mm | 2.1 | |
| Sept. 19 | Patchy rain possible | 34° /26° | 0.2 mm | 2.2 | |
| Sept. 20 | Patchy rain possible | 34° /27° | 1.5 mm | 0 | |
| Sept. 21 | Partly cloudy | 34° /27° | 0 mm | 7 | |
| Sept. 22 | Partly cloudy | 34° /27° | 0 mm | 7 | |
| Sept. 23 |  Sunny | 35° /27° | 0 mm | 8 | |
| Sept. 24 | Partly cloudy | 35° /27° | 0 mm | 7 | |
| Sept. 25 | Partly cloudy | 34° /26° | 0 mm | 7 | |
| Sept. 26 | Partly cloudy | 34° /26° | 0 mm | 7 | |
| Sept. 27 | Patchy rain possible | 34° /27° | 0.1 mm | 6 | |
| Sept. 28 | Patchy rain possible | 34° /26° | 0.2 mm | 6 | |
| Sept. 29 | Patchy rain possible | 34° /27° | 0.2 mm | 7 | |
| Sept. 30 | Light rain shower | 33° /25° | 0.6 mm | 7 | |
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Important Notice
Our weather forecast for Brownsville 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 Brownsville forecast closer to your planned date for the most up-to-date weather information.
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Brownsville in September - FAQ
What are the expected maximum and minimum temperatures in Brownsville during September?
During September, expect a variety of temperatures with highs around 34° and lows near 26°, suitable for diverse activities and preferences.
How much rainfall should be expected in Brownsville during September?
Moderate rainfall is anticipated in Brownsville during September, with a total of 93.4 mm spread over approximately 13 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Brownsville during September?
The average wind speed in Brownsville during September is 24 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Brownsville
Explore the daily rainfall trends and prepare for Brownsvilles September weather 💧
UV exposure in Brownsville during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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