Rhinelander (WI)
September
Weather in Rhinelander, Wisconsin for September 2025
Your guide to Rhinelander weather in September - trends and predictions
Until now, September 2025 in Rhinelander is slightly cooler than the historical average by -1.2 °F.
The forecast for the upcoming days in Rhinelander predicts a temperature of 22 °F, which is slightly above the historical average.
In general, the average temperature in Rhinelander at the beginning of September is 16 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 20.1 °F by the end of September.
Rhinelander experiences moderate rainfall in September, with an average of 9 rainy days and a total precipitation of 71.5 mm.
New! Chat with our AI weatherman - it’s amazing and free.
Temperatures
Rain 🌧️
More
21
Dry days
9
Rainy days
0
Snow days
22°/11°
Temperatures
14 km/h
Avg max wind
71 %
Avg humidity
Rhinelander Weather September
Move between months or click on a day
Temperatures trend during September in Rhinelander
See the weather trend as well as the moving average line
September weather in Rhinelander day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Thundery outbreaks possible | 23° /16° | 0 mm | 5 | |
| Sept. 2 |  Fog | 22° /11° | 7.7 mm | 5 | |
| Sept. 3 |  Light rain shower | 16° /5° | 11.1 mm | 4 | |
| Sept. 4 |  Overcast | 12° /3° | 2.7 mm | 3 | |
| Sept. 5 |  Light rain | 10° /6° | 34.5 mm | 3 | |
| Sept. 6 | Overcast | 14° /8° | 0 mm | 3 | |
| Sept. 7 | Overcast | 15° /7° | 0 mm | 4 | |
| Sept. 8 | Mist | 17° /6° | 0 mm | 4 | |
| Sept. 9 |  Sunny | 21° /12° | 12 mm | 6 | |
| Sept. 10 | Patchy rain possible | 23° /13° | 3.6 mm | 6 | |
| Sept. 11 |  Cloudy | 24° /12° | 0 mm | 6 | |
| Sept. 12 | Sunny | 23° /13° | 0 mm | 6 | |
| Sept. 13 | Cloudy | 27° /16° | 3.5 mm | 6 | |
| Sept. 14 | Sunny | 26° /14° | 0 mm | 7 | |
| Sept. 15 |  Partly cloudy | 29° /15° | 0 mm | 1.4 | |
| Sept. 16 | Thundery outbreaks possible | 27° /18° | 0 mm | 1.3 | |
| Sept. 17 |  Heavy rain | 27° /20° | 23.4 mm | 1.2 | |
| Sept. 18 |  Moderate rain | 28° /14° | 16.8 mm | 1.2 | |
| Sept. 19 | Patchy rain possible | 22° /14° | 0.3 mm | 0 | |
| Sept. 20 | Patchy rain possible | 23° /13° | 4.5 mm | 4 | |
| Sept. 21 | Patchy rain possible | 17° /15° | 1.8 mm | 4 | |
| Sept. 22 | Patchy rain possible | 21° /13° | 4.2 mm | 4 | |
| Sept. 23 | Patchy rain possible | 19° /13° | 0.8 mm | 3 | |
| Sept. 24 | Partly cloudy | 18° /11° | 0.1 mm | 4 | |
| Sept. 25 | Patchy rain possible | 20° /12° | 0.2 mm | 3 | |
| Sept. 26 | Patchy rain possible | 20° /11° | 0 mm | 3 | |
| Sept. 27 | Partly cloudy | 21° /9° | 0 mm | 4 | |
| Sept. 28 | Patchy rain possible | 16° /11° | 2.1 mm | 3 | |
| Sept. 29 | Overcast | 25° /11° | 0 mm | 6 | |
| Sept. 30 | Sunny | 21° /9° | 0 mm | 6 | |
| 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 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 Rhinelander during September?
Moderate rainfall is anticipated in Rhinelander during September, with a total of 71.5 mm spread over approximately 9 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 💧
UV exposure in Rhinelander during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Quick links
More Rhinelander weather pages
You are here
Where is Rhinelander?Get accurate weather forecasts for Rhinelander, located at latitude 45.637 and longitude -89.412. Stay updated with localized weather information tailored for Rhinelander.
Found a mistake?
We appreciate your attention to details. Tell us here.