| 2023 Hardiness Zone: | Zone 4b: -25°F to -20°F Zone 4a: -30°F to -25°F |
| 2012 Hardiness Zone: | Zone 4a: -30°F to -25°F |
| 1990 Hardiness Zone: | Zone 3b: -35F to -30F |
| Average First Frost Date: | Oct. 1 - Oct. 10 |
| Average Last Frost Date: | May 21 - May 31 |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year |
| Ecoregion: | 50g - Chippewa Lobe Rocky Ground Moraines |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 54732 - Cornell, WI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 0 | 5 | 18 | 32 | 44 | 52 | 57 | 55 | 47 | 36 | 23 | 8 | 31 |
| Avg Max Temp (°F) | 22 | 29 | 40 | 56 | 69 | 77 | 81 | 79 | 70 | 58 | 40 | 26 | 54 |
| Avg Precip (In.) | 1.06 | .79 | 1.76 | 2.72 | 3.43 | 4.27 | 3.79 | 4.73 | 3.94 | 2.41 | 2.14 | 1.07 | 32.11 |