Appleton (WI)
September
Weather in Appleton, Wisconsin for September 2026
Your guide to Appleton weather in September - trends and predictions
Until now, September 2026 in Appleton is slightly cooler than the historical average by 0.5 °F.
The forecast for the next days in Appleton predicts a temperature of 17.1 °F, which is cooler than the historical average.
In general, the average temperature in Appleton at the beginning of September is 23 °F. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 20 °F by the end of September.
Appleton experiences moderate rainfall in September, with an average of 7 rainy days and a total precipitation of 57.1 mm.
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Temperatures
Rain 🌧️
More
23
Dry days
7
Rainy days
0
Snow days
23°/12°
Temperatures
15 km/h
Avg max wind
76 %
Avg humidity
Appleton Weather September
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Temperatures trend during September in Appleton
See the weather trend as well as the moving average line
September weather in Appleton day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Partly cloudy | 27° /14° | 0 mm | 6 | |
| Sept. 2 |  Sunny | 25° /13° | 37.1 mm | 4 | |
| Sept. 3 | Sunny | 24° /13° | 10.3 mm | 5 | |
| Sept. 4 | Sunny | 23° /11° | 23.8 mm | 4 | |
| Sept. 5 |  Moderate or heavy rain shower | 22° /13° | 6 mm | 4 | |
| Sept. 6 |  Patchy rain possible | 20° /9° | 0.1 mm | 5 | |
| Sept. 7 | Partly cloudy | 20° /7° | 0 mm | 4 | |
| Sept. 8 | Partly cloudy | 23° /9° | 9.6 mm | 4 | |
| Sept. 9 | Sunny | 26° /14° | 0 mm | 6 | |
| Sept. 10 | Partly cloudy | 25° /14° | 0 mm | 6 | |
| Sept. 11 | Moderate rain at times | 26° /15° | 0.2 mm | 5 | |
| Sept. 12 | Sunny | 26° /14° | 0.1 mm | 4 | |
| Sept. 13 |  Overcast | 23° /14° | 5.8 mm | 5 | |
| Sept. 14 | Overcast | 26° /13° | 2.9 mm | 6 | |
| Sept. 15 | Moderate rain at times | 27° /15° | 6.2 mm | 4 | |
| Sept. 16 | Sunny | 26° /13° | 0 mm | 5 | |
| Sept. 17 | Partly cloudy | 25° /13° | 0 mm | 5 | |
| Sept. 18 | Moderate or heavy rain shower | 23° /14° | 5.9 mm | 4 | |
| Sept. 19 | Overcast | 21° /13° | 4.7 mm | 4 | |
| Sept. 20 | Overcast | 21° /14° | 7 mm | 4 | |
| Sept. 21 | Sunny | 22° /12° | 0.1 mm | 4 | |
| Sept. 22 | Moderate or heavy rain shower | 19° /12° | 7.7 mm | 4 | |
| Sept. 23 | Sunny | 20° /11° | 1.2 mm | 5 | |
| Sept. 24 | Overcast | 20° /10° | 0 mm | 4 | |
| Sept. 25 | Sunny | 22° /10° | 0.1 mm | 4 | |
| Sept. 26 | Overcast | 18° /12° | 0 mm | 4.8 | |
| Sept. 27 | Overcast | 20° /11° | 0 mm | 4.6 | |
| Sept. 28 | Sunny | 22° /14° | 0 mm | 5.1 | |
| Sept. 29 | Overcast | 21° /14° | 1.3 mm | 4.5 | |
| Sept. 30 |  Fog | 17° /14° | 14.4 mm | 1.3 | |
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Important Notice
Our weather forecast for Appleton 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 Appleton forecast closer to your planned date for the most up-to-date weather information.
Change Month
Appleton in September - FAQ
What are the expected maximum and minimum temperatures in Appleton during September?
Enjoy moderate daytime temperatures of up to 23° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Appleton during September?
Moderate rainfall is anticipated in Appleton during September, with a total of 57.1 mm spread over approximately 7 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Appleton during September?
The average wind speed in Appleton during September is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Appleton
Explore the daily rainfall trends and prepare for Appletons September weather 💧
Typically, Appleton has 7 rainy days in September with a total of 57.1 mm of rainfall.
UV exposure in Appleton during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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