Rhinelander (WI)
September
Weather in Rhinelander, Wisconsin for September 2026
Your guide to Rhinelander weather in September - trends and predictions
Until now, September 2026 in Rhinelander is slightly cooler than the historical average by 0.6 °F.
The forecast for the next days in Rhinelander predicts a temperature of 15.5 °F, which is cooler than the historical average.
In general, the average temperature in Rhinelander at the beginning of September is 22.6 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 18.3 °F by the end of September.
The climate of Rhinelander in September is notably wet, with an average of 12 rainy days, and a total of 99.1 mm of precipitation.
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Temperatures
Rain 🌧️
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18
Dry days
12
Rainy days
0
Snow days
21°/12°
Temperatures
14 km/h
Avg max wind
74 %
Avg humidity
Rhinelander Weather September
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Temperatures trend during September in Rhinelander
See the weather trend as well as the moving average line
September weather in Rhinelander day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Thundery outbreaks possible | 28° /15° | 0 mm | 5 | |
| Sept. 2 |  Fog | 25° /13° | 132.3 mm | 4 | |
| Sept. 3 |  Light rain shower | 21° /9° | 50.5 mm | 5 | |
| Sept. 4 |  Overcast | 21° /9° | 2.1 mm | 2 | |
| Sept. 5 |  Light rain | 20° /11° | 17.4 mm | 4 | |
| Sept. 6 | Overcast | 22° /10° | 0 mm | 5 | |
| Sept. 7 | Overcast | 21° /9° | 0 mm | 4 | |
| Sept. 8 | Mist | 19° /11° | 129.6 mm | 3 | |
| Sept. 9 |  Sunny | 23° /13° | 8.1 mm | 6 | |
| Sept. 10 | Patchy rain possible | 23° /12° | 2.4 mm | 6 | |
| Sept. 11 |  Cloudy | 25° /12° | 0.1 mm | 5 | |
| Sept. 12 | Sunny | 23° /13° | 0.4 mm | 4 | |
| Sept. 13 | Cloudy | 23° /13° | 2.3 mm | 6 | |
| Sept. 14 | Sunny | 23° /11° | 4.7 mm | 6 | |
| Sept. 15 | Overcast | 25° /14° | 0.7 mm | 4 | |
| Sept. 16 | Overcast | 26° /13° | 0 mm | 5 | |
| Sept. 17 | Sunny | 24° /14° | 2.3 mm | 5 | |
| Sept. 18 | Sunny | 21° /13° | 7 mm | 4 | |
| Sept. 19 | Overcast | 18° /12° | 0.7 mm | 3 | |
| Sept. 20 | Patchy rain possible | 19° /12° | 0.8 mm | 3 | |
| Sept. 21 |  Moderate rain at times | 20° /10° | 3.4 mm | 4 | |
| Sept. 22 | Overcast | 18° /10° | 4 mm | 5 | |
| Sept. 23 | Overcast | 18° /9° | 0 mm | 4 | |
| Sept. 24 | Overcast | 19° /9° | 0 mm | 3 | |
| Sept. 25 | Sunny | 20° /12° | 0 mm | 4.8 | |
| Sept. 26 | Overcast | 18° /11° | 0 mm | 4.5 | |
| Sept. 27 | Overcast | 18° /12° | 0 mm | 4.5 | |
| Sept. 28 | Overcast | 21° /14° | 0 mm | 4.1 | |
| Sept. 29 | Overcast | 17° /11° | 1.3 mm | 4 | |
| Sept. 30 | Mist | 15° /10° | 0.1 mm | 3 | |
| Next | |||||
Important Notice
Our weather forecast for Rhinelander 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 Rhinelander forecast closer to your planned date for the most up-to-date weather information.
Change Month
Rhinelander in September - FAQ
What are the expected maximum and minimum temperatures in Rhinelander during September?
Enjoy moderate daytime temperatures of up to 21° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Rhinelander during September?
Moderate rainfall is anticipated in Rhinelander during September, with a total of 99.1 mm spread over approximately 12 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Rhinelander during September?
The average wind speed in Rhinelander during September is 14 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Rhinelander
Explore the daily rainfall trends and prepare for Rhinelanders September weather 💧
Typically, Rhinelander has 12 rainy days in September with a total of 99.1 mm of rainfall.
UV exposure in Rhinelander during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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