Weather in La Crosse, Wisconsin for September 2026
Until now, September 2026 in La Crosse has been nearly identical to the historical average, with a temperature of 23.6 °F (showing only a slight deviation of 0.1 °F).
Expect cooler weather in the next days in La Crosse with the forecast suggesting a temperature of 16.8 °F, lower than the historical average.
In general, the average temperature in La Crosse at the beginning of September is 23.3 °F. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 20.3 °F 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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La Crosse Weather September
Temperatures trend during September in La Crosse
September weather in La Crosse day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Partly cloudy | 25° /13° | 0 mm | 5 | |
| Sept. 2 |  Sunny | 26° /14° | 19.3 mm | 4 | |
| Sept. 3 |  Mist | 23° /13° | 11.5 mm | 4 | |
| Sept. 4 | Sunny | 26° /12° | 5.9 mm | 6 | |
| Sept. 5 |  Overcast | 22° /13° | 0.1 mm | 4 | |
| Sept. 6 | Fog | 20° /9° | 0.2 mm | 4 | |
| Sept. 7 | Partly cloudy | 21° /7° | 0 mm | 4 | |
| Sept. 8 | Sunny | 23° /10° | 9.1 mm | 4 | |
| Sept. 9 | Sunny | 27° /13° | 3.9 mm | 6 | |
| Sept. 10 |  Patchy rain possible | 26° /12° | 0.1 mm | 6 | |
| Sept. 11 | Partly cloudy | 26° /14° | 0 mm | 6 | |
| Sept. 12 | Sunny | 25° /13° | 2.9 mm | 6 | |
| Sept. 13 | Overcast | 26° /13° | 0 mm | 6 | |
| Sept. 14 | Patchy rain possible | 26° /13° | 8.5 mm | 5 | |
| Sept. 15 |  Thundery outbreaks possible | 27° /16° | 7 mm | 4 | |
| Sept. 16 | Sunny | 27° /14° | 1.4 mm | 5 | |
| Sept. 17 | Sunny | 26° /14° | 1.4 mm | 5 | |
| Sept. 18 |  Cloudy | 24° /14° | 12.5 mm | 4 | |
| Sept. 19 |  Moderate rain at times | 22° /15° | 10.1 mm | 4 | |
| Sept. 20 | Fog | 23° /15° | 42.2 mm | 4 | |
| Sept. 21 | Cloudy | 22° /12° | 1.8 mm | 4 | |
| Sept. 22 | Overcast | 18° /10° | 6.4 mm | 5 | |
| Sept. 23 | Mist | 19° /8° | 0 mm | 5 | |
| Sept. 24 | Mist | 20° /8° | 0.6 mm | 3 | |
| Sept. 25 | Mist | 21° /12° | 0.5 mm | 4 | |
| Sept. 26 | Mist | 26° /11° | 0 mm | 7 | |
| Sept. 27 | Overcast | 17° /13° | 0.1 mm | 3 | |
| Sept. 28 | Partly cloudy | 21° /13° | 0 mm | 4.5 | |
| Sept. 29 | Overcast | 19° /13° | 24.3 mm | 3.3 | |
| Sept. 30 | Fog | 18° /15° | 9.4 mm | 1.4 | |
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La Crosse in September - FAQ
What are the expected maximum and minimum temperatures in La Crosse during September?
How much rainfall should be expected in La Crosse during September?
What are the typical wind conditions in La Crosse during September?
September rainfall patterns in La Crosse
UV exposure in La Crosse during September
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Where is La Crosse?Get accurate weather forecasts for La Crosse, located at latitude 43.801 and longitude -91.24. Stay updated with localized weather information tailored for La Crosse.