Lebanon (MO)
September
Weather in Lebanon, Missouri for September 2026
Your guide to Lebanon weather in September - trends and predictions
So far, September 2026 in Lebanon shows a warmer trend than usual by 4.2 °F.
Expect cooler weather in the next days in Lebanon with the forecast suggesting a temperature of 23.8 °F, lower than the historical average.
In general, the average temperature in Lebanon at the beginning of September is 30.1 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 22.7 °F by the end of September.
The climate of Lebanon in September is notably wet, with an average of 11 rainy days, and a total of 382.2 mm of precipitation.
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Temperatures
Rain 🌧️
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19
Dry days
11
Rainy days
0
Snow days
26°/15°
Temperatures
15 km/h
Avg max wind
75 %
Avg humidity
Lebanon Weather September
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Temperatures trend during September in Lebanon
See the weather trend as well as the moving average line
September weather in Lebanon day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Overcast | 29° /20° | 0 mm | 6 | |
| Sept. 2 | Overcast | 29° /20° | 0 mm | 7 | |
| Sept. 3 |  Fog | 30° /19° | 0 mm | 6 | |
| Sept. 4 |  Moderate or heavy rain shower | 31° /20° | 15.9 mm | 9 | |
| Sept. 5 | Moderate or heavy rain shower | 29° /18° | 8.1 mm | 8 | |
| Sept. 6 | Fog | 32° /17° | 1.6 mm | 8 | |
| Sept. 7 |  Sunny | 31° /16° | 0 mm | 9 | |
| Sept. 8 |  Cloudy | 30° /14° | 0 mm | 9 | |
| Sept. 9 | Overcast | 29° /18° | 0.9 mm | 7 | |
| Sept. 10 | Mist | 26° /15° | 4.8 mm | 5 | |
| Sept. 11 | Cloudy | 30° /19° | 0.2 mm | 5 | |
| Sept. 12 | Sunny | 34° /18° | 0 mm | 8 | |
| Sept. 13 |  Partly cloudy | 32° /18° | 0.1 mm | 6 | |
| Sept. 14 |  Thundery outbreaks possible | 33° /20° | 1.8 mm | 7 | |
| Sept. 15 | Thundery outbreaks possible | 33° /23° | 0.1 mm | 7 | |
| Sept. 16 | Fog | 33° /22° | 18 mm | 7 | |
| Sept. 17 | Thundery outbreaks possible | 33° /21° | 0.4 mm | 7 | |
| Sept. 18 | Thundery outbreaks possible | 32° /20° | 0.4 mm | 5 | |
| Sept. 19 | Overcast | 36° /26° | 0 mm | 6 | |
| Sept. 20 | Overcast | 32° /23° | 6.6 mm | 7.4 | |
| Sept. 21 |  Patchy rain possible | 24° /19° | 5 mm | 6.6 | |
| Sept. 22 | Overcast | 19° /14° | 0 mm | 4 | |
| Sept. 23 | Sunny | 23° /11° | 0 mm | 6 | |
| Sept. 24 | Overcast | 21° /14° | 0 mm | 5 | |
| Sept. 25 | Overcast | 20° /13° | 0 mm | 4 | |
| Sept. 26 | Sunny | 24° /13° | 0 mm | 6 | |
| Sept. 27 | Sunny | 27° /16° | 0 mm | 7 | |
| Sept. 28 | Overcast | 27° /18° | 0 mm | 6 | |
| Sept. 29 | Light rain shower | 21° /15° | 27.2 mm | 4 | |
| Sept. 30 | Patchy rain possible | 19° /13° | 1.9 mm | 4 | |
| Next | |||||
Important Notice
Our weather forecast for Lebanon 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 Lebanon forecast closer to your planned date for the most up-to-date weather information.
Change Month
Lebanon in September - FAQ
What are the expected maximum and minimum temperatures in Lebanon during September?
During September, expect a variety of temperatures with highs around 26° and lows near 15°, suitable for diverse activities and preferences.
How much rainfall should be expected in Lebanon during September?
Significant rainfall exceeding 382.2 mm is expected in Lebanon during September, occurring over more than 11 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Lebanon during September?
The average wind speed in Lebanon during September is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Lebanon
Explore the daily rainfall trends and prepare for Lebanons September weather 💧
Typically, Lebanon has 11 rainy days in September with a total of 382.2 mm of rainfall.
UV exposure in Lebanon during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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