Portage County (Stevens Point)
September
Weather in Portage County, Wisconsin for September 2026
Your guide to Portage County weather in September - trends and predictions
In general, the average temperature in Portage County at the beginning of September is 18 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 22 °F by the end of September.
Portage County experiences moderate rainfall in September, with an average of 9 rainy days and a total precipitation of 87.5 mm.
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Temperatures
Rain 🌧️
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21
Dry days
9
Rainy days
0
Snow days
22°/12°
Temperatures
17 km/h
Avg max wind
81 %
Avg humidity
Portage County Weather September
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Temperatures trend during September in Portage County
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September weather in Portage County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Fog | 23° /12° | 0 mm | 5 | |
| Sept. 2 | Fog | 22° /12° | 2.7 mm | 5 | |
| Sept. 3 |  Moderate or heavy rain shower | 17° /9° | 27 mm | 4 | |
| Sept. 4 | Mist | 14° /2° | 0 mm | 3 | |
| Sept. 5 |  Overcast | 17° /8° | 15.6 mm | 4 | |
| Sept. 6 | Overcast | 15° /7° | 0 mm | 4 | |
| Sept. 7 |  Sunny | 18° /4° | 0 mm | 5 | |
| Sept. 8 | Mist | 18° /5° | 0 mm | 4 | |
| Sept. 9 | Moderate rain at times | 22° /14° | 3.1 mm | 5 | |
| Sept. 10 |  Thundery outbreaks possible | 23° /15° | 3.1 mm | 5 | |
| Sept. 11 | Fog | 23° /14° | 0 mm | 5 | |
| Sept. 12 | Mist | 20° /13° | 0 mm | 5 | |
| Sept. 13 | Moderate or heavy rain shower | 23° /16° | 16 mm | 5 | |
| Sept. 14 | Mist | 29° /14° | 0 mm | 6 | |
| Sept. 15 | Fog | 28° /15° | 0 mm | 6 | |
| Sept. 16 | Sunny | 29° /14° | 0 mm | 7 | |
| Sept. 17 | Thundery outbreaks possible | 28° /16° | 0 mm | 6 | |
| Sept. 18 | Thundery outbreaks possible | 25° /19° | 5.2 mm | 6 | |
| Sept. 19 | Thundery outbreaks possible | 18° /14° | 0 mm | 4 | |
| Sept. 20 |  Light rain shower | 19° /14° | 13.6 mm | 4 | |
| Sept. 21 | Fog | 21° /16° | 0 mm | 5 | |
| Sept. 22 | Light rain shower | 20° /14° | 1.2 mm | 5 | |
| Sept. 23 | Fog | 20° /16° | 0 mm | 5 | |
| Sept. 24 | Mist | 20° /13° | 0 mm | 5 | |
| Sept. 25 |  Cloudy | 21° /13° | 0 mm | 5 | |
| Sept. 26 | Fog | 20° /12° | 0 mm | 5 | |
| Sept. 27 | Fog | 27° /14° | 0 mm | 6 | |
| Sept. 28 | Sunny | 21° /7° | 0 mm | 6 | |
| Sept. 29 | Overcast | 22° /10° | 0 mm | 5 | |
| Sept. 30 | Fog | 23° /15° | 0 mm | 5 | |
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Important Notice
Our weather forecast for Portage 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 Portage County forecast closer to your planned date for the most up-to-date weather information.
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Portage County in September - FAQ
What are the expected maximum and minimum temperatures in Portage County during September?
Enjoy moderate daytime temperatures of up to 22° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Portage County during September?
Moderate rainfall is anticipated in Portage County during September, with a total of 87.5 mm spread over approximately 9 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Portage County during September?
The average wind speed in Portage County during September is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Portage County
Explore the daily rainfall trends and prepare for Portage Countys September weather 💧
UV exposure in Portage County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Portage County?Get accurate weather forecasts for Portage County, located at latitude 44.524 and longitude -89.575. Stay updated with localized weather information tailored for Portage County.
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