Onalaska, WI Weather & Climate Normals
Onalaska's real weather, in one number
Onalaska, WI scores 41/100 on this site's reading of NOAA's own 30-year normals: strongly seasonal. Comfortable weather is limited to a shorter window; summers, winters, or precipitation swing wide. 5 of the year's 12 months average between 55 and 75°F, the range this site counts as mild.
Onalaska's hottest and coldest months
Onalaska's hottest month is Jul, averaging 75°F; its coldest is Jan, averaging 19°F, a 56°F swing across the year, one of the widest gaps in this dataset.
Onalaska's weather across the year
| Month | Avg high | Avg low | Precip | Snow |
|---|---|---|---|---|
| Jan | 27°F | 11°F | 1.25in | 11.8in |
| Feb | 33°F | 14°F | 1.19in | 9.7in |
| Mar | 46°F | 26°F | 2.04in | 7.3in |
| Apr | 60°F | 38°F | 3.75in | 2.9in |
| May | 72°F | 50°F | 4.33in | 0in |
| Jun | 82°F | 60°F | 5.08in | 0in |
| Jul | 85°F | 65°F | 4.23in | 0in |
| Aug | 83°F | 62°F | 3.9in | 0in |
| Sep | 76°F | 54°F | 3.63in | 0in |
| Oct | 62°F | 42°F | 2.49in | 0.3in |
| Nov | 46°F | 30°F | 1.85in | 3.4in |
| Dec | 33°F | 18°F | 1.49in | 10.9in |
May, Jun, Jul, Aug, and Sep are the best time to see Onalaska at its mildest; the rest of the year, plan around Jan's cold.
Rain and snow in Onalaska
Onalaska averages 35.23in of precipitation a year across roughly 123 days with measurable rain or snow, and 46.3in of snow a year.
Where Onalaska ranks
Onalaska ranks 4386 of 4876 US cities in this dataset for comfort score, and 123 of 157 within WI. About 19,898 people live there.
If you need tomorrow's forecast, not the 30-year average
Everything above is a 30-year average from La Crosse Muni Ap, WI US, 2.5 miles from Onalaska, not a prediction for any specific day.
More on how this is worked out
What a 30-year climate normal actually is · Why this uses the nearest NOAA station