Cameron County (Brownsville)
September
Weather in Cameron County for September 2025
Your guide to Cameron County weather in September - trends and predictions
In general, the average temperature in Cameron County at the beginning of September is 34.4 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 33.6 °F by the end of September.
With an average of 5 rainy days, Cameron County experiences minimal rainfall in September.
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25
Dry days
5
Rainy days
0
Snow days
36°/26°
Temperatures
26 km/h
Avg max wind
67 %
Avg humidity
Cameron County in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  36° | 2  34° | 3 35° | 4 34° | 5  34° | 6  35° | 7 33° |
| 8  32° | 9 33° | 10 31° | 11 34° | 12 34° | 13 34° | 14 35° |
| 15 34° | 16  33° | 17 33° | 18 35° | 19  33° | 20 33° | 21 35° |
| 22 34° | 23 34° | 24 35° | 25 33° | 26 32° | 27 34° | 28 34° |
| 29 34° | 30 33° |
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Temperatures trend during September in Cameron County
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 | Mist | 36° /26° | 0.7 mm | 8 | |
| Sept. 2 | Cloudy | 34° /25° | 2.3 mm | 8 | |
| Sept. 3 | Mist | 35° /25° | 6.7 mm | 8 | |
| Sept. 4 | Mist | 34° /26° | 16.9 mm | 8 | |
| Sept. 5 | Overcast | 34° /26° | 2.3 mm | 8 | |
| Sept. 6 | Patchy rain possible | 35° /26° | 2.6 mm | 8 | |
| Sept. 7 | Cloudy | 33° /26° | 0.1 mm | 7 | |
| Sept. 8 | Partly cloudy | 32° /26° | 9.8 mm | 8 | |
| Sept. 9 | Cloudy | 33° /25° | 0.9 mm | 7 | |
| Sept. 10 | Patchy rain possible | 31° /25° | 36.9 mm | 7 | |
| Sept. 11 | Overcast | 34° /25° | 0.1 mm | 8 | |
| Sept. 12 | Partly cloudy | 34° /24° | 0.4 mm | 8 | |
| Sept. 13 | Partly cloudy | 34° /26° | 0 mm | 8 | |
| Sept. 14 | Partly cloudy | 35° /26° | 0 mm | 8 | |
| Sept. 15 | Cloudy | 34° /27° | 2.3 mm | 8 | |
| Sept. 16 | Thundery outbreaks possible | 33° /26° | 2.8 mm | 8 | |
| Sept. 17 | Light rain shower | 33° /25° | 3.3 mm | 7 | |
| Sept. 18 | Patchy rain possible | 35° /24° | 1.1 mm | 8 | |
| Sept. 19 | Moderate rain at times | 33° /25° | 2.2 mm | 7 | |
| Sept. 20 | Partly cloudy | 33° /25° | 0 mm | 8 | |
| Sept. 21 | Patchy rain possible | 35° /25° | 0 mm | 8 | |
| Sept. 22 | Partly cloudy | 34° /25° | 0.1 mm | 8 | |
| Sept. 23 | Overcast | 34° /26° | 0 mm | 7 | |
| Sept. 24 | Patchy rain possible | 35° /26° | 0.1 mm | 8 | |
| Sept. 25 | Cloudy | 33° /26° | 0 mm | 8 | |
| Sept. 26 | Cloudy | 32° /25° | 0 mm | 7 | |
| Sept. 27 | Patchy rain possible | 34° /22° | 0.9 mm | 7 | |
| Sept. 28 | Patchy rain possible | 34° /24° | 0 mm | 8 | |
| Sept. 29 | Patchy rain possible | 34° /24° | 0.1 mm | 8 | |
| Sept. 30 | Light rain shower | 33° /25° | 0.6 mm | 7 | |
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Important Notice
Our weather forecast for Cameron 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 Cameron County forecast closer to your planned date for the most up-to-date weather information.
Cameron County in September - FAQ
What are the expected maximum and minimum temperatures in Cameron County during September?
With daytime temperatures soaring above 36° and not dropping much below 26° at night, September in Cameron County is quite hot. Staying hydrated and avoiding peak sun hours is advisable.
How much rainfall should be expected in Cameron County during September?
Expect minimal rainfall in Cameron County during September, with a total of 17.3 mm over approximately 5 days. This minimal precipitation is unlikely to significantly impact plans.
What are the typical wind conditions in Cameron County during September?
The average wind speed in Cameron County during September is 26 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Cameron County
Explore the daily rainfall trends and prepare for Cameron Countys September weather 💧
UV exposure in Cameron County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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