Missouri
September
Weather in Missouri for September 2025
Your guide to Missouri weather in September - trends and predictions
In general, the average temperature in Missouri at the beginning of September is 33.7 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 30.6 °F by the end of September.
Missouri sees moderate rainfall in September, averaging 9 rainy days.
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21
Dry days
9
Rainy days
0
Snow days
33°/16°
Temperatures
19 km/h
Avg max wind
51 %
Avg humidity
Missouri in September average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  34° | 2 33° | 3 35° | 4  36° | 5  38° | 6 30° | 7 30° |
| 8  31° | 9  33° | 10 34° | 11  29° | 12  31° | 13 29° | 14 32° |
| 15  31° | 16 29° | 17 31° | 18 32° | 19 36° | 20 30° | 21 32° |
| 22  28° | 23 26° | 24 27° | 25 30° | 26 30° | 27 29° | 28 32° |
| 29 33° | 30 33° |
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Temperatures trend during September in Missouri
See the weather trend as well as the moving average line
September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 | Sunny | 34° /16° | 0 mm | 9 | |
| Sept. 2 | Sunny | 33° /14° | 0 mm | 8 | |
| Sept. 3 | Sunny | 35° /16° | 0 mm | 8 | |
| Sept. 4 | Partly cloudy | 36° /19° | 0 mm | 9 | |
| Sept. 5 | Thundery outbreaks possible | 38° /19° | 2.4 mm | 9 | |
| Sept. 6 | Sunny | 30° /15° | 0 mm | 8 | |
| Sept. 7 | Sunny | 30° /12° | 0 mm | 8 | |
| Sept. 8 | Patchy rain possible | 31° /12° | 0.2 mm | 7 | |
| Sept. 9 | Overcast | 33° /14° | 0 mm | 8 | |
| Sept. 10 | Overcast | 34° /15° | 0 mm | 8 | |
| Sept. 11 | Heavy rain | 29° /15° | 9.2 mm | 7 | |
| Sept. 12 | Mist | 31° /15° | 0 mm | 7 | |
| Sept. 13 | Sunny | 29° /15° | 0 mm | 7 | |
| Sept. 14 | Overcast | 32° /15° | 0 mm | 7 | |
| Sept. 15 | Cloudy | 31° /15° | 0 mm | 7 | |
| Sept. 16 | Overcast | 29° /16° | 0.3 mm | 7 | |
| Sept. 17 | Sunny | 31° /15° | 0 mm | 8 | |
| Sept. 18 | Sunny | 32° /16° | 0 mm | 8 | |
| Sept. 19 | Thundery outbreaks possible | 36° /20° | 0 mm | 8 | |
| Sept. 20 | Thundery outbreaks possible | 30° /19° | 9.9 mm | 7 | |
| Sept. 21 | Thundery outbreaks possible | 32° /19° | 6.2 mm | 7 | |
| Sept. 22 | Patchy light rain with thunder | 28° /16° | 50.8 mm | 7 | |
| Sept. 23 | Patchy light rain with thunder | 26° /15° | 15.3 mm | 6 | |
| Sept. 24 | Fog | 27° /16° | 7.8 mm | 6 | |
| Sept. 25 | Sunny | 30° /14° | 0 mm | 7 | |
| Sept. 26 | Partly cloudy | 30° /14° | 0 mm | 7 | |
| Sept. 27 | Patchy rain possible | 29° /14° | 0.4 mm | 7 | |
| Sept. 28 | Partly cloudy | 32° /15° | 0 mm | 8 | |
| Sept. 29 | Sunny | 33° /17° | 0 mm | 8 | |
| Sept. 30 | Patchy light rain with thunder | 33° /17° | 0.6 mm | 8 | |
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Important Notice
Our weather forecast for Missouri 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 Missouri forecast closer to your planned date for the most up-to-date weather information.
Missouri in September - FAQ
What are the expected maximum and minimum temperatures in Missouri during September?
Expect warm days with temperatures around 33°, cooling to mild conditions of 16° after sunset. Perfect for those who enjoy warm weather.
How much rainfall should be expected in Missouri during September?
Moderate rainfall is anticipated in Missouri during September, with a total of 73.2 mm spread over approximately 9 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Missouri during September?
The average wind speed in Missouri during September is 19 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Missouri
Explore the daily rainfall trends and prepare for Missouris September weather 💧
UV exposure in Missouri during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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