Clark County (Thorp)
September
Weather in Clark County, Wisconsin for September 2026
Your guide to Clark County weather in September - trends and predictions
So far, September 2026 in Clark County is slightly warmer than the historical average by 0.6 °F.
Expect cooler weather in the next days in Clark County with the forecast suggesting a temperature of 15.7 °F, lower than the historical average.
In general, the average temperature in Clark County at the beginning of September is 22.1 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 17.4 °F by the end of September.
The climate of Clark County in September is notably wet, with an average of 11 rainy days, and a total of 69.1 mm of precipitation.
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Temperatures
Rain 🌧️
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19
Dry days
11
Rainy days
0
Snow days
22°/11°
Temperatures
16 km/h
Avg max wind
79 %
Avg humidity
Clark County Weather September
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Temperatures trend during September in Clark County
See the weather trend as well as the moving average line
September weather in Clark County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Mist | 24° /11° | 0 mm | 5 | |
| Sept. 2 |  Sunny | 24° /13° | 11.8 mm | 4 | |
| Sept. 3 | Sunny | 23° /11° | 25.8 mm | 4 | |
| Sept. 4 | Sunny | 23° /10° | 0 mm | 5 | |
| Sept. 5 |  Patchy light drizzle | 21° /12° | 6.9 mm | 5 | |
| Sept. 6 | Mist | 20° /10° | 0 mm | 4 | |
| Sept. 7 | Sunny | 20° /7° | 0 mm | 4 | |
| Sept. 8 | Mist | 22° /8° | 28.7 mm | 3 | |
| Sept. 9 | Sunny | 24° /14° | 6 mm | 6 | |
| Sept. 10 |  Patchy rain possible | 24° /12° | 2.2 mm | 6 | |
| Sept. 11 | Sunny | 25° /12° | 0.1 mm | 6 | |
| Sept. 12 | Sunny | 24° /14° | 1.3 mm | 4 | |
| Sept. 13 |  Overcast | 23° /13° | 2.6 mm | 5 | |
| Sept. 14 | Patchy rain possible | 23° /13° | 11.3 mm | 5 | |
| Sept. 15 |  Patchy light rain with thunder | 24° /15° | 3.9 mm | 4 | |
| Sept. 16 | Sunny | 25° /14° | 0 mm | 5 | |
| Sept. 17 | Sunny | 25° /14° | 1.9 mm | 5 | |
| Sept. 18 |  Cloudy | 22° /14° | 5.8 mm | 4 | |
| Sept. 19 | Light rain shower | 19° /13° | 3.4 mm | 4 | |
| Sept. 20 | Fog | 20° /13° | 0 mm | 3 | |
| Sept. 21 | Mist | 23° /13° | 1.9 mm | 6 | |
| Sept. 22 | Sunny | 16° /7° | 0 mm | 5.2 | |
| Sept. 23 | Sunny | 18° /7° | 0 mm | 5.1 | |
| Sept. 24 | Overcast | 17° /10° | 0 mm | 3.1 | |
| Sept. 25 | Fog | 14° /10° | 6.8 mm | 0.4 | |
| Sept. 26 | Patchy rain possible | 16° /9° | 11.1 mm | 4 | |
| Sept. 27 | Fog | 19° /13° | 1.6 mm | 5 | |
| Sept. 28 | Sunny | 20° /12° | 0 mm | 6 | |
| Sept. 29 | Light rain shower | 17° /13° | 3.6 mm | 5 | |
| Sept. 30 | Sunny | 19° /10° | 0 mm | 5 | |
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Important Notice
Our weather forecast for Clark 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 Clark County forecast closer to your planned date for the most up-to-date weather information.
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Clark County in September - FAQ
What are the expected maximum and minimum temperatures in Clark County during September?
Enjoy moderate daytime temperatures of up to 22° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Clark County during September?
Moderate rainfall is anticipated in Clark County during September, with a total of 69.1 mm spread over approximately 11 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Clark County during September?
The average wind speed in Clark County during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Clark County
Explore the daily rainfall trends and prepare for Clark Countys September weather 💧
Typically, Clark County has 11 rainy days in September with a total of 69.1 mm of rainfall.
UV exposure in Clark County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Clark County?Get accurate weather forecasts for Clark County, located at latitude 44.961 and longitude -90.8. Stay updated with localized weather information tailored for Clark County.
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