Johnson County (Overland Park)
September
Weather in Johnson County for September 2025
Your guide to Johnson County weather in September - trends and predictions
In general, the average temperature in Johnson County at the beginning of September is 33.7 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 30.1 °F by the end of September.
Johnson County experiences moderate rainfall in September, with an average of 7 rainy days and a total precipitation of 102 mm.
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Temperatures
Rain 🌧️
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23
Dry days
7
Rainy days
0
Snow days
31°/17°
Temperatures
18 km/h
Avg max wind
53 %
Avg humidity
Johnson County 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  32° | 10  34° | 11  29° | 12  31° | 13 28° | 14 31° |
| 15 31° | 16 29° | 17 30° | 18 32° | 19 35° | 20 30° | 21 31° |
| 22 28° | 23  25° | 24 27° | 25 29° | 26 29° | 27 29° | 28 32° |
| 29 32° | 30  33° |
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Temperatures trend during September in Johnson County
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September weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 | Sunny | 34° /17° | 0 mm | 9 | |
| Sept. 2 | Sunny | 33° /15° | 0 mm | 8 | |
| Sept. 3 | Sunny | 35° /17° | 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° /16° | 0 mm | 8 | |
| Sept. 7 | Sunny | 30° /14° | 0 mm | 8 | |
| Sept. 8 | Patchy rain possible | 31° /13° | 0.2 mm | 7 | |
| Sept. 9 | Cloudy | 32° /15° | 0 mm | 8 | |
| Sept. 10 | Overcast | 34° /15° | 0 mm | 8 | |
| Sept. 11 | Heavy rain | 29° /16° | 7.4 mm | 7 | |
| Sept. 12 | Mist | 31° /16° | 0 mm | 7 | |
| Sept. 13 | Sunny | 28° /16° | 0 mm | 7 | |
| Sept. 14 | Overcast | 31° /16° | 0 mm | 7 | |
| Sept. 15 | Cloudy | 31° /16° | 0 mm | 7 | |
| Sept. 16 | Overcast | 29° /16° | 0.2 mm | 6 | |
| Sept. 17 | Sunny | 30° /16° | 0 mm | 8 | |
| Sept. 18 | Sunny | 32° /17° | 0 mm | 8 | |
| Sept. 19 | Thundery outbreaks possible | 35° /20° | 0 mm | 8 | |
| Sept. 20 | Light rain shower | 30° /19° | 8.8 mm | 7 | |
| Sept. 21 | Thundery outbreaks possible | 31° /19° | 7.4 mm | 7 | |
| Sept. 22 | Thundery outbreaks possible | 28° /16° | 49 mm | 7 | |
| Sept. 23 | Patchy light rain with thunder | 25° /15° | 18.3 mm | 6 | |
| Sept. 24 | Fog | 27° /15° | 7.2 mm | 6 | |
| Sept. 25 | Sunny | 29° /15° | 0 mm | 7 | |
| Sept. 26 | Partly cloudy | 29° /16° | 0 mm | 7 | |
| Sept. 27 | Patchy rain possible | 29° /15° | 0.5 mm | 7 | |
| Sept. 28 | Partly cloudy | 32° /16° | 0 mm | 8 | |
| Sept. 29 | Sunny | 32° /17° | 0 mm | 8 | |
| Sept. 30 | Moderate rain at times | 33° /18° | 0.5 mm | 8 | |
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Important Notice
Our weather forecast for Johnson 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 Johnson County forecast closer to your planned date for the most up-to-date weather information.
Johnson County in September - FAQ
What are the expected maximum and minimum temperatures in Johnson County during September?
Expect warm days with temperatures around 31°, cooling to mild conditions of 17° after sunset. Perfect for those who enjoy warm weather.
How much rainfall should be expected in Johnson County during September?
Significant rainfall exceeding 102 mm is expected in Johnson 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 Johnson County during September?
The average wind speed in Johnson County during September is 18 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Johnson County
Explore the daily rainfall trends and prepare for Johnson Countys September weather 💧
UV exposure in Johnson County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Johnson County?Get accurate weather forecasts for Johnson County, located at latitude 38.982 and longitude -94.671. Stay updated with localized weather information tailored for Johnson County.
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