McAllen (TX)
September
Weather in McAllen, Texas for September 2027
Your guide to McAllen weather in September - trends and predictions
In general, the average temperature in McAllen at the beginning of September is 36.2 °C. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 34.1 °C by the end of September.
The climate of McAllen in September is notably wet, with an average of 13 rainy days, and a total of 112 mm of precipitation.
Is September a good time to visit McAllen? check out the best time to travel to McAllen page.
✨ Is September a good time to visit McAllen? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
17
Dry days
13
Rainy days
0
Snow days
35°/25°
Temperatures
24 km/h
Avg max wind
66 %
Avg humidity
McAllen Weather September
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Temperatures trend during September in McAllen
See the weather trend as well as the moving average line
September weather in McAllen day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Patchy rain possible | 38° /26° | 2.4 mm | 9 | |
| Sept. 2 | Patchy rain possible | 38° /26° | 0.9 mm | 9 | |
| Sept. 3 |  Light rain | 36° /26° | 2.7 mm | 9 | |
| Sept. 4 |  Moderate rain | 35° /26° | 14 mm | 8 | |
| Sept. 5 |  Moderate or heavy rain shower | 36° /26° | 5.8 mm | 9 | |
| Sept. 6 | Light rain | 35° /26° | 5.3 mm | 9 | |
| Sept. 7 |  Sunny | 35° /26° | 0 mm | 9 | |
| Sept. 8 |  Cloudy | 34° /25° | 0 mm | 9 | |
| Sept. 9 | Moderate rain | 34° /24° | 11.4 mm | 9 | |
| Sept. 10 | Light rain | 33° /25° | 3.3 mm | 7 | |
| Sept. 11 | Light rain | 36° /25° | 2.7 mm | 9 | |
| Sept. 12 | Light rain | 36° /26° | 2.8 mm | 9 | |
| Sept. 13 |  Partly cloudy | 35° /26° | 0 mm | 9 | |
| Sept. 14 | Cloudy | 35° /26° | 0.1 mm | 9 | |
| Sept. 15 | Moderate rain | 34° /25° | 13.6 mm | 8 | |
| Sept. 16 | Light rain | 33° /25° | 2.8 mm | 6 | |
| Sept. 17 | Light rain | 34° /25° | 4.3 mm | 6 | |
| Sept. 18 | Light rain | 34° /25° | 3.3 mm | 5 | |
| Sept. 19 | Patchy rain possible | 34° /26° | 1.5 mm | 8 | |
| Sept. 20 | Patchy rain possible | 35° /25° | 0.3 mm | 7 | |
| Sept. 21 | Moderate or heavy rain shower | 34° /26° | 8.3 mm | 7 | |
| Sept. 22 | Moderate rain | 34° /26° | 10.9 mm | 8 | |
| Sept. 23 | Moderate or heavy rain shower | 34° /26° | 5.1 mm | 7 | |
| Sept. 24 | Patchy rain possible | 35° /26° | 1.1 mm | 6 | |
| Sept. 25 | Light rain | 33° /26° | 3.2 mm | 6 | |
| Sept. 26 | Light rain | 33° /25° | 3.7 mm | 6 | |
| Sept. 27 | Partly cloudy | 34° /24° | 0 mm | 6 | |
| Sept. 28 | Partly cloudy | 34° /23° | 0.4 mm | 7 | |
| Sept. 29 | Partly cloudy | 34° /24° | 0.5 mm | 6 | |
| Sept. 30 | Patchy rain possible | 35° /24° | 1.6 mm | 6 | |
| Next | |||||
Important Notice
Our weather forecast for McAllen 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 McAllen forecast closer to your planned date for the most up-to-date weather information.
Change Month
McAllen in September - FAQ
What are the expected maximum and minimum temperatures in McAllen during September?
With daytime temperatures soaring above 35° and not dropping much below 25° at night, September in McAllen is quite hot. Staying hydrated and avoiding peak sun hours is advisable.
How much rainfall should be expected in McAllen during September?
Significant rainfall exceeding 112 mm is expected in McAllen during September, occurring over more than 13 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in McAllen during September?
The average wind speed in McAllen during September is 24 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in McAllen
Explore the daily rainfall trends and prepare for McAllens September weather 💧
Typically, McAllen has 13 rainy days in September with a total of 112 mm of rainfall.
UV exposure in McAllen during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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