Killeen (TX)
September
Weather in Killeen, Texas for September 2026
Your guide to Killeen weather in September - trends and predictions
So far, September 2026 in Killeen shows a warmer trend than usual by 2.3 °F.
The forecast for the next days in Killeen predicts temperatures to be around 34 °F, close to the historical average.
In general, the average temperature in Killeen at the beginning of September is 33.6 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 32.7 °F by the end of September.
With an average of 3 rainy days, Killeen experiences minimal rainfall in September.
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Temperatures
Rain 🌧️
More
27
Dry days
3
Rainy days
0
Snow days
33°/21°
Temperatures
21 km/h
Avg max wind
57 %
Avg humidity
Killeen Weather September
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Temperatures trend during September in Killeen
See the weather trend as well as the moving average line
September weather in Killeen day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Patchy rain possible | 34° /24° | 0.1 mm | 8 | |
| Sept. 2 |  Sunny | 36° /23° | 0 mm | 9 | |
| Sept. 3 | Light rain shower | 34° /23° | 3.9 mm | 8 | |
| Sept. 4 |  Light drizzle | 34° /22° | 13.3 mm | 6 | |
| Sept. 5 | Patchy rain possible | 33° /22° | 0 mm | 8 | |
| Sept. 6 |  Partly cloudy | 32° /22° | 0 mm | 8 | |
| Sept. 7 | Sunny | 32° /22° | 1 mm | 8 | |
| Sept. 8 | Sunny | 34° /21° | 0 mm | 9 | |
| Sept. 9 | Sunny | 33° /20° | 0 mm | 8 | |
| Sept. 10 | Sunny | 35° /20° | 0.6 mm | 9 | |
| Sept. 11 | Light rain shower | 33° /22° | 2.6 mm | 8 | |
| Sept. 12 | Partly cloudy | 35° /22° | 0.2 mm | 9 | |
| Sept. 13 |  Cloudy | 36° /22° | 0 mm | 9 | |
| Sept. 14 | Sunny | 36° /23° | 0 mm | 8 | |
| Sept. 15 | Patchy rain possible | 36° /23° | 0.1 mm | 8 | |
| Sept. 16 | Partly cloudy | 35° /22° | 0 mm | 8 | |
| Sept. 17 |  Overcast | 36° /25° | 0 mm | 8.2 | |
| Sept. 18 | Sunny | 36° /25° | 0 mm | 8.6 | |
| Sept. 19 | Sunny | 35° /23° | 0 mm | 8.8 | |
| Sept. 20 | Sunny | 35° /23° | 0 mm | 9.1 | |
| Sept. 21 | Sunny | 35° /24° | 0.2 mm | 9.1 | |
| Sept. 22 | Sunny | 35° /25° | 0 mm | 8 | |
| Sept. 23 | Overcast | 35° /24° | 0 mm | 7 | |
| Sept. 24 | Sunny | 34° /27° | 0 mm | 8 | |
| Sept. 25 | Sunny | 32° /21° | 0 mm | 8 | |
| Sept. 26 | Sunny | 31° /19° | 0 mm | 8 | |
| Sept. 27 | Sunny | 31° /17° | 0 mm | 8 | |
| Sept. 28 | Sunny | 33° /18° | 0 mm | 8 | |
| Sept. 29 | Sunny | 34° /18° | 0 mm | 8 | |
| Sept. 30 | Sunny | 34° /20° | 0 mm | 8 | |
| Next | |||||
Important Notice
Our weather forecast for Killeen 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 Killeen forecast closer to your planned date for the most up-to-date weather information.
Change Month
Killeen in September - FAQ
What are the expected maximum and minimum temperatures in Killeen during September?
During September, expect a variety of temperatures with highs around 33° and lows near 21°, suitable for diverse activities and preferences.
How much rainfall should be expected in Killeen during September?
Rainfall in Killeen during September is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 3 days seeing any precipitation. Planning without the concern for rain is generally straightforward during this very dry period.
What are the typical wind conditions in Killeen during September?
The average wind speed in Killeen during September is 21 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Killeen
Explore the daily rainfall trends and prepare for Killeens September weather 💧
Typically, Killeen has 3 rainy days in September with a total of 6.5 mm of rainfall.
UV exposure in Killeen during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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