McLennan County (Waco)
September
Weather in McLennan County, Texas for September 2026
Your guide to McLennan County weather in September - trends and predictions
So far, September 2026 in McLennan County shows a warmer trend than usual by 2.6 °F.
The forecast for the next days in McLennan County predicts temperatures to be around 35 °F, close to the historical average.
In general, the average temperature in McLennan County at the beginning of September is 33.9 °F. As the month progressed, temperatures tended to slightly decrease, reaching an average of 33.6 °F by the end of September.
McLennan County experiences moderate rainfall in September, with an average of 6 rainy days and a total precipitation of 35.3 mm.
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Temperatures
Rain 🌧️
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24
Dry days
6
Rainy days
0
Snow days
33°/21°
Temperatures
19 km/h
Avg max wind
57 %
Avg humidity
McLennan County Weather September
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Temperatures trend during September in McLennan County
See the weather trend as well as the moving average line
September weather in McLennan County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Moderate rain at times | 33° /23° | 1.2 mm | 8 | |
| Sept. 2 | Moderate or heavy rain shower | 36° /23° | 7.3 mm | 9 | |
| Sept. 3 | Moderate or heavy rain shower | 33° /24° | 3.2 mm | 7 | |
| Sept. 4 |  Sunny | 35° /23° | 0.4 mm | 8 | |
| Sept. 5 | Moderate or heavy rain shower | 35° /23° | 3.6 mm | 8 | |
| Sept. 6 |  Cloudy | 33° /22° | 0 mm | 8 | |
| Sept. 7 | Sunny | 32° /21° | 0 mm | 8 | |
| Sept. 8 | Sunny | 33° /20° | 0 mm | 8 | |
| Sept. 9 | Sunny | 33° /20° | 0 mm | 9 | |
| Sept. 10 | Sunny | 35° /20° | 0.8 mm | 9 | |
| Sept. 11 |  Patchy rain possible | 34° /22° | 0.7 mm | 8 | |
| Sept. 12 |  Partly cloudy | 35° /22° | 0.1 mm | 9 | |
| Sept. 13 | Sunny | 36° /22° | 0 mm | 9 | |
| Sept. 14 | Sunny | 36° /24° | 0.1 mm | 9 | |
| Sept. 15 | Moderate or heavy rain shower | 36° /24° | 0.6 mm | 8 | |
| Sept. 16 | Partly cloudy | 35° /23° | 0.1 mm | 8 | |
| Sept. 17 |  Overcast | 37° /26° | 0 mm | 8.1 | |
| Sept. 18 | Sunny | 37° /26° | 0 mm | 8.5 | |
| Sept. 19 | Sunny | 36° /24° | 0 mm | 8.6 | |
| Sept. 20 | Sunny | 36° /24° | 0 mm | 8.8 | |
| Sept. 21 | Overcast | 36° /25° | 1.3 mm | 8.9 | |
| Sept. 22 | Sunny | 36° /26° | 0.5 mm | 9 | |
| Sept. 23 | Overcast | 36° /25° | 0 mm | 8 | |
| Sept. 24 | Sunny | 35° /27° | 0 mm | 8 | |
| Sept. 25 | Sunny | 33° /21° | 0 mm | 8 | |
| Sept. 26 | Sunny | 32° /19° | 0 mm | 8 | |
| Sept. 27 | Sunny | 32° /18° | 0 mm | 8 | |
| Sept. 28 | Sunny | 34° /20° | 0 mm | 8 | |
| Sept. 29 | Sunny | 34° /19° | 0 mm | 8 | |
| Sept. 30 | Sunny | 35° /21° | 0 mm | 9 | |
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Important Notice
Our weather forecast for McLennan 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 McLennan County forecast closer to your planned date for the most up-to-date weather information.
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McLennan County in September - FAQ
What are the expected maximum and minimum temperatures in McLennan County 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 McLennan County during September?
In September, McLennan County can expect light to moderate rainfall, totaling 35.3 mm across approximately 6 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in McLennan County during September?
The average wind speed in McLennan County during September is 19 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in McLennan County
Explore the daily rainfall trends and prepare for McLennan Countys September weather 💧
Typically, McLennan County has 6 rainy days in September with a total of 35.3 mm of rainfall.
UV exposure in McLennan County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is McLennan County?Get accurate weather forecasts for McLennan County, located at latitude 31.549 and longitude -97.147. Stay updated with localized weather information tailored for McLennan County.
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