| 2023 Hardiness Zone: | Zone 4a: -30°F to -25°F | |
| 2012 Hardiness Zone: | Zone 3b: -35°F to -30°F Zone 4a: -30°F to -25°F | |
| 1990 Hardiness Zone: | Zone 3b: -35F to -30F | |
| Average First Frost Date: | Sep. 21 - Sep. 30 | |
| 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 | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 54514 - Butternut, WI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 0 | 5 | 17 | 30 | 43 | 52 | 57 | 55 | 45 | 35 | 22 | 7 | 31 |
| Avg Max Temp (°F) | 19 | 26 | 37 | 51 | 66 | 73 | 77 | 75 | 65 | 54 | 36 | 23 | 50 |
| Avg Precip (In.) | 1.24 | .86 | 1.82 | 2.35 | 3.22 | 4.1 | 4.07 | 4.46 | 3.98 | 2.88 | 2.23 | 1.27 | 32.49 |