Lewisville (TX)
September
Weather in Lewisville, Texas for September 2026
Your guide to Lewisville weather in September - trends and predictions
So far, September 2026 in Lewisville shows a warmer trend than usual by 3.2 °F.
The forecast for the next days in Lewisville predicts temperatures to be around 34 °F, close to the historical average.
In general, the average temperature in Lewisville at the beginning of September is 33.7 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 32.1 °F by the end of September.
Lewisville experiences moderate rainfall in September, with an average of 8 rainy days and a total precipitation of 70 mm.
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Temperatures
Rain 🌧️
More
22
Dry days
8
Rainy days
0
Snow days
33°/22°
Temperatures
18 km/h
Avg max wind
53 %
Avg humidity
Lewisville Weather September
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Temperatures trend during September in Lewisville
See the weather trend as well as the moving average line
September weather in Lewisville day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Light rain shower | 34° /24° | 2.8 mm | 8 | |
| Sept. 2 |  Light drizzle | 34° /25° | 4.7 mm | 8 | |
| Sept. 3 |  Sunny | 32° /22° | 1.4 mm | 8 | |
| Sept. 4 | Sunny | 34° /22° | 0.8 mm | 8 | |
| Sept. 5 | Light rain shower | 35° /23° | 0.5 mm | 8 | |
| Sept. 6 |  Partly cloudy | 34° /22° | 7.5 mm | 8 | |
| Sept. 7 | Sunny | 33° /22° | 0 mm | 8 | |
| Sept. 8 | Sunny | 34° /21° | 0 mm | 9 | |
| Sept. 9 | Sunny | 33° /21° | 0 mm | 9 | |
| Sept. 10 | Sunny | 35° /22° | 3.8 mm | 9 | |
| Sept. 11 | Light rain shower | 34° /23° | 2.6 mm | 6 | |
| Sept. 12 | Sunny | 36° /23° | 0.1 mm | 9 | |
| Sept. 13 | Sunny | 36° /25° | 0 mm | 9 | |
| Sept. 14 | Patchy rain possible | 36° /25° | 0.2 mm | 8 | |
| Sept. 15 | Patchy rain possible | 35° /25° | 0.7 mm | 8 | |
| Sept. 16 | Sunny | 35° /25° | 0 mm | 9 | |
| Sept. 17 | Partly cloudy | 37° /29° | 0 mm | 7.8 | |
| Sept. 18 | Sunny | 37° /28° | 0 mm | 8.1 | |
| Sept. 19 | Sunny | 37° /27° | 0 mm | 8.6 | |
| Sept. 20 |  Overcast | 36° /27° | 0 mm | 8.7 | |
| Sept. 21 | Sunny | 36° /27° | 0 mm | 9 | |
| Sept. 22 | Patchy rain possible | 35° /27° | 1 mm | 9 | |
| Sept. 23 | Overcast | 36° /28° | 0 mm | 9 | |
| Sept. 24 | Sunny | 33° /22° | 0.5 mm | 8 | |
| Sept. 25 | Sunny | 32° /20° | 0 mm | 8 | |
| Sept. 26 | Sunny | 31° /22° | 0 mm | 8 | |
| Sept. 27 | Sunny | 30° /21° | 0 mm | 8 | |
| Sept. 28 | Sunny | 32° /22° | 0 mm | 8 | |
| Sept. 29 | Sunny | 33° /22° | 0 mm | 8 | |
| Sept. 30 | Sunny | 34° /22° | 0 mm | 8 | |
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Important Notice
Our weather forecast for Lewisville 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 Lewisville forecast closer to your planned date for the most up-to-date weather information.
Change Month
Lewisville in September - FAQ
What are the expected maximum and minimum temperatures in Lewisville during September?
During September, expect a variety of temperatures with highs around 33° and lows near 22°, suitable for diverse activities and preferences.
How much rainfall should be expected in Lewisville during September?
Moderate rainfall is anticipated in Lewisville during September, with a total of 70 mm spread over approximately 8 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Lewisville during September?
The average wind speed in Lewisville during September is 18 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Lewisville
Explore the daily rainfall trends and prepare for Lewisvilles September weather 💧
Typically, Lewisville has 8 rainy days in September with a total of 70 mm of rainfall.
UV exposure in Lewisville during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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