| 2023 Hardiness Zone: | Zone 4b: -25°F to -20°F 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 11 - May 20 | |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year | |
| Ecoregion: | 51a - St. Croix Outwash Plain | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 54871 - Shell Lake, WI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 0 | 6 | 19 | 32 | 44 | 53 | 58 | 56 | 47 | 36 | 22 | 7 | 31 |
| Avg Max Temp (°F) | 21 | 28 | 40 | 56 | 70 | 77 | 81 | 79 | 69 | 57 | 39 | 25 | 54 |
| Avg Precip (In.) | .93 | .72 | 1.53 | 2.29 | 3.16 | 4.09 | 4.26 | 4.58 | 3.78 | 2.57 | 1.95 | .92 | 30.78 |