La Crosse (WI)
September
Weather in La Crosse, Wisconsin for September 2026
Your guide to La Crosse weather in September - trends and predictions
In general, the average temperature in La Crosse at the beginning of September is 19.6 °C. As the month progressed, temperatures tended to significantly warm up, reaching an average of 24.1 °C by the end of September.
La Crosse experiences moderate rainfall in September, with an average of 6 rainy days and a total precipitation of 89.6 mm.
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Temperatures
Rain 🌧️
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24
Dry days
6
Rainy days
0
Snow days
24°/12°
Temperatures
15 km/h
Avg max wind
76 %
Avg humidity
La Crosse Weather September
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Temperatures trend during September in La Crosse
See the weather trend as well as the moving average line
September weather in La Crosse day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Partly cloudy | 21° /10° | 0 mm | 6 | |
| Sept. 2 |  Sunny | 23° /12° | 0 mm | 6 | |
| Sept. 3 |  Mist | 20° /10° | 0 mm | 5 | |
| Sept. 4 | Sunny | 21° /8° | 8.8 mm | 5 | |
| Sept. 5 |  Patchy rain possible | 19° /9° | 0.2 mm | 5 | |
| Sept. 6 | Fog | 15° /6° | 0.3 mm | 4 | |
| Sept. 7 | Partly cloudy | 18° /3° | 0 mm | 5 | |
| Sept. 8 | Sunny | 22° /6° | 0 mm | 6 | |
| Sept. 9 | Sunny | 26° /11° | 0 mm | 6 | |
| Sept. 10 | Patchy rain possible | 26° /12° | 0.1 mm | 6 | |
| Sept. 11 | Partly cloudy | 25° /15° | 0 mm | 6 | |
| Sept. 12 | Sunny | 25° /12° | 0 mm | 6 | |
| Sept. 13 |  Overcast | 28° /15° | 0 mm | 6 | |
| Sept. 14 | Patchy rain possible | 30° /16° | 0.2 mm | 7 | |
| Sept. 15 |  Thundery outbreaks possible | 29° /16° | 2.3 mm | 6 | |
| Sept. 16 | Sunny | 29° /16° | 2.2 mm | 7 | |
| Sept. 17 | Sunny | 29° /15° | 0 mm | 7 | |
| Sept. 18 |  Cloudy | 27° /15° | 0 mm | 6 | |
| Sept. 19 |  Moderate rain at times | 24° /16° | 2.6 mm | 6 | |
| Sept. 20 | Fog | 24° /16° | 63.4 mm | 6 | |
| Sept. 21 | Cloudy | 26° /13° | 0 mm | 6 | |
| Sept. 22 | Overcast | 19° /11° | 9.7 mm | 5 | |
| Sept. 23 | Mist | 19° /9° | 0 mm | 5 | |
| Sept. 24 | Mist | 20° /8° | 0 mm | 5 | |
| Sept. 25 | Mist | 22° /11° | 0 mm | 5 | |
| Sept. 26 | Mist | 26° /11° | 0 mm | 7 | |
| Sept. 27 | Fog | 27° /9° | 0 mm | 6 | |
| Sept. 28 | Fog | 25° /8° | 0 mm | 6 | |
| Sept. 29 | Fog | 26° /11° | 0 mm | 6 | |
| Sept. 30 | Mist | 23° /12° | 0 mm | 6 | |
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Important Notice
Our weather forecast for La Crosse 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 La Crosse forecast closer to your planned date for the most up-to-date weather information.
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La Crosse in September - FAQ
What are the expected maximum and minimum temperatures in La Crosse during September?
Enjoy moderate daytime temperatures of up to 24° and cooler nights around 12°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in La Crosse during September?
Moderate rainfall is anticipated in La Crosse during September, with a total of 89.6 mm spread over approximately 6 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in La Crosse during September?
The average wind speed in La Crosse during September is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in La Crosse
Explore the daily rainfall trends and prepare for La Crosses September weather 💧
Typically, La Crosse has 6 rainy days in September with a total of 89.6 mm of rainfall.
UV exposure in La Crosse during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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