Boone County (Columbia)
September
Weather in Boone County, Missouri for September 2026
Your guide to Boone County weather in September - trends and predictions
So far, September 2026 in Boone County is slightly warmer than the historical average by 1.6 °F.
The forecast for the next days in Boone County predicts a temperature of 22.4 °F, which is cooler than the historical average.
In general, the average temperature in Boone County at the beginning of September is 29.7 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 25.4 °F by the end of September.
Boone County experiences moderate rainfall in September, with an average of 7 rainy days and a total precipitation of 101.8 mm.
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Temperatures
Rain 🌧️
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23
Dry days
7
Rainy days
0
Snow days
28°/16°
Temperatures
16 km/h
Avg max wind
65 %
Avg humidity
Boone County Weather September
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Temperatures trend during September in Boone County
See the weather trend as well as the moving average line
September weather in Boone County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Sunny | 31° /18° | 0 mm | 7 | |
| Sept. 2 | Sunny | 30° /16° | 0 mm | 7 | |
| Sept. 3 |  Overcast | 30° /17° | 0 mm | 7 | |
| Sept. 4 | Sunny | 31° /16° | 4.3 mm | 7 | |
| Sept. 5 |  Fog | 30° /17° | 0 mm | 6 | |
| Sept. 6 | Fog | 28° /16° | 0.4 mm | 6 | |
| Sept. 7 | Sunny | 28° /13° | 0 mm | 7 | |
| Sept. 8 | Sunny | 30° /12° | 0 mm | 7 | |
| Sept. 9 | Sunny | 29° /14° | 1.9 mm | 7 | |
| Sept. 10 | Sunny | 29° /15° | 115.4 mm | 5 | |
| Sept. 11 |  Partly cloudy | 32° /17° | 0.4 mm | 7 | |
| Sept. 12 | Partly cloudy | 33° /18° | 0 mm | 7 | |
| Sept. 13 |  Patchy rain possible | 30° /19° | 0 mm | 6 | |
| Sept. 14 | Mist | 33° /18° | 1.9 mm | 7 | |
| Sept. 15 | Light rain shower | 31° /21° | 5.5 mm | 6 | |
| Sept. 16 | Light rain shower | 32° /19° | 1.3 mm | 6 | |
| Sept. 17 | Partly cloudy | 33° /19° | 0 mm | 8 | |
| Sept. 18 |  Cloudy | 32° /19° | 1.7 mm | 6 | |
| Sept. 19 | Sunny | 32° /20° | 0.5 mm | 5 | |
| Sept. 20 | Fog | 31° /19° | 1.4 mm | 5 | |
| Sept. 21 |  Moderate or heavy rain shower | 24° /19° | 5.6 mm | 4 | |
| Sept. 22 |  Torrential rain shower | 24° /15° | 28.7 mm | 4 | |
| Sept. 23 | Overcast | 22° /15° | 0 mm | 5 | |
| Sept. 24 | Moderate or heavy rain shower | 21° /14° | 24.7 mm | 5 | |
| Sept. 25 | Fog | 24° /13° | 0.8 mm | 4 | |
| Sept. 26 | Sunny | 26° /13° | 0 mm | 7 | |
| Sept. 27 | Patchy rain possible | 26° /15° | 0.6 mm | 4.3 | |
| Sept. 28 | Overcast | 27° /17° | 0 mm | 5.4 | |
| Sept. 29 | Overcast | 28° /19° | 0.1 mm | 2.9 | |
| Sept. 30 | Overcast | 26° /21° | 1 mm | 1.6 | |
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Important Notice
Our weather forecast for Boone 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 Boone County forecast closer to your planned date for the most up-to-date weather information.
Change Month
Boone County in September - FAQ
What are the expected maximum and minimum temperatures in Boone County during September?
During September, expect a variety of temperatures with highs around 28° and lows near 16°, suitable for diverse activities and preferences.
How much rainfall should be expected in Boone County during September?
Significant rainfall exceeding 101.8 mm is expected in Boone County during September, occurring over more than 7 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Boone County during September?
The average wind speed in Boone County during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Boone County
Explore the daily rainfall trends and prepare for Boone Countys September weather 💧
Typically, Boone County has 7 rainy days in September with a total of 101.8 mm of rainfall.
UV exposure in Boone County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Boone County?Get accurate weather forecasts for Boone County, located at latitude 38.952 and longitude -92.334. Stay updated with localized weather information tailored for Boone County.
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