| 2023 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 4b: -25°F to -20°F Zone 4a: -30°F to -25°F | |
| 2012 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 4b: -25°F to -20°F Zone 4a: -30°F to -25°F | |
| 1990 Hardiness Zone: | Zone 4b: -25F to -20F | |
| 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: | 50a - Lake Superior Lacustrine Clay Plain | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 54891 - Washburn, WI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 1 | 6 | 17 | 28 | 39 | 48 | 55 | 54 | 45 | 35 | 23 | 9 | 30 |
| Avg Max Temp (°F) | 21 | 27 | 37 | 49 | 63 | 73 | 78 | 76 | 67 | 56 | 38 | 26 | 51 |
| Avg Precip (In.) | 1.44 | .95 | 1.96 | 2.2 | 2.99 | 3.87 | 4.04 | 3.96 | 3.68 | 2.63 | 2.48 | 1.31 | 31.5 |