| 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: | Sep. 21 - Sep. 30 | |
| Average Last Frost Date: | Jun. 1 - Jun. 10 | |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year | |
| Ecoregion: | 50i - Northern Highlands Lakes Country | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 54539 - Lake Tomahawk, WI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | -2 | 2 | 13 | 27 | 39 | 49 | 54 | 52 | 44 | 33 | 21 | 6 | 28 |
| Avg Max Temp (°F) | 20 | 26 | 37 | 51 | 66 | 73 | 77 | 75 | 66 | 54 | 37 | 24 | 50 |
| Avg Precip (In.) | 1.18 | .86 | 1.73 | 2.29 | 3.26 | 3.87 | 3.9 | 4.48 | 4.12 | 2.7 | 2.2 | 1.3 | 31.89 |