| 2023 Hardiness Zone: | Zone 5a: -20°F to -15°F | |
| 2012 Hardiness Zone: | Zone 4b: -25°F to -20°F | |
| 1990 Hardiness Zone: | Zone 4b: -25F to -20F | |
| Average First Frost Date: | Oct. 11 - Oct. 20 | |
| Average Last Frost Date: | May 1 - May 10 | |
| Koppen-Geiger Climate Zone: | Dfa - Humid Continental Hot Summers | |
| Ecoregion: | 52b - Paleozoic Plateau/Coulee Section | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 54650 - Onalaska, WI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 6 | 12 | 24 | 37 | 48 | 58 | 62 | 60 | 51 | 40 | 27 | 13 | 37 |
| Avg Max Temp (°F) | 25 | 32 | 44 | 59 | 72 | 81 | 85 | 82 | 73 | 61 | 43 | 29 | 57 |
| Avg Precip (In.) | 1.14 | .93 | 1.96 | 3.39 | 3.39 | 4.13 | 4.32 | 4.4 | 3.5 | 2.22 | 2.11 | 1.19 | 32.69 |