Marathon County (Wausau)
September
Weather in Marathon County, Wisconsin for September 2026
Your guide to Marathon County weather in September - trends and predictions
In general, the average temperature in Marathon County at the beginning of September is 18.4 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 22.4 °C by the end of September.
Marathon County experiences moderate rainfall in September, with an average of 10 rainy days and a total precipitation of 78 mm.
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Temperatures
Rain 🌧️
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20
Dry days
10
Rainy days
0
Snow days
22°/11°
Temperatures
16 km/h
Avg max wind
79 %
Avg humidity
Marathon County Weather September
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Temperatures trend during September in Marathon County
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September weather in Marathon County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Sunny | 21° /11° | 0 mm | 5 | |
| Sept. 2 | Sunny | 22° /9° | 0 mm | 6 | |
| Sept. 3 | Sunny | 19° /8° | 5.4 mm | 5 | |
| Sept. 4 | Sunny | 18° /6° | 0 mm | 5 | |
| Sept. 5 |  Moderate rain at times | 17° /9° | 10.5 mm | 4 | |
| Sept. 6 |  Patchy rain possible | 15° /6° | 0.2 mm | 4 | |
| Sept. 7 | Sunny | 17° /3° | 0 mm | 5 | |
| Sept. 8 |  Partly cloudy | 19° /3° | 0 mm | 5 | |
| Sept. 9 | Sunny | 21° /12° | 8.5 mm | 5 | |
| Sept. 10 | Patchy rain possible | 24° /12° | 19.4 mm | 6 | |
| Sept. 11 |  Cloudy | 24° /13° | 0 mm | 6 | |
| Sept. 12 | Sunny | 23° /14° | 0 mm | 6 | |
| Sept. 13 |  Overcast | 24° /15° | 4.8 mm | 6 | |
| Sept. 14 | Cloudy | 26° /13° | 0 mm | 6 | |
| Sept. 15 | Overcast | 27° /15° | 0 mm | 6 | |
| Sept. 16 | Sunny | 28° /15° | 0 mm | 7 | |
| Sept. 17 | Partly cloudy | 27° /15° | 0 mm | 7 | |
| Sept. 18 | Overcast | 25° /15° | 1.8 mm | 6 | |
| Sept. 19 | Cloudy | 21° /13° | 2.4 mm | 5 | |
| Sept. 20 | Overcast | 21° /15° | 4.7 mm | 5 | |
| Sept. 21 | Partly cloudy | 23° /14° | 2.4 mm | 6 | |
| Sept. 22 | Patchy rain possible | 19° /12° | 17.2 mm | 4 | |
| Sept. 23 | Sunny | 19° /11° | 0.6 mm | 5 | |
| Sept. 24 | Overcast | 19° /8° | 0 mm | 5 | |
| Sept. 25 | Overcast | 21° /8° | 0 mm | 5 | |
| Sept. 26 | Overcast | 20° /9° | 0 mm | 5 | |
| Sept. 27 | Overcast | 26° /11° | 0 mm | 6 | |
| Sept. 28 | Overcast | 24° /9° | 0 mm | 6 | |
| Sept. 29 | Sunny | 25° /10° | 0 mm | 6 | |
| Sept. 30 |  Mist | 22° /10° | 0 mm | 5 | |
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Important Notice
Our weather forecast for Marathon 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 Marathon County forecast closer to your planned date for the most up-to-date weather information.
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Marathon County in September - FAQ
What are the expected maximum and minimum temperatures in Marathon 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 Marathon County during September?
Moderate rainfall is anticipated in Marathon County during September, with a total of 78 mm spread over approximately 10 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Marathon County during September?
The average wind speed in Marathon County during September is 16 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Marathon County
Explore the daily rainfall trends and prepare for Marathon Countys September weather 💧
Typically, Marathon County has 10 rainy days in September with a total of 78 mm of rainfall.
UV exposure in Marathon County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Marathon County?Get accurate weather forecasts for Marathon County, located at latitude 44.959 and longitude -89.63. Stay updated with localized weather information tailored for Marathon County.
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