| 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: | Oct. 1 - Oct. 10 | |
| 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 54837 - Frederic, WI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 0 | 7 | 20 | 33 | 45 | 54 | 59 | 57 | 48 | 36 | 22 | 7 | 32 |
| Avg Max Temp (°F) | 20 | 27 | 39 | 55 | 69 | 76 | 81 | 78 | 69 | 57 | 38 | 24 | 53 |
| Avg Precip (In.) | .99 | .78 | 1.69 | 2.37 | 3.42 | 4.34 | 4.17 | 4.48 | 3.73 | 2.55 | 2.01 | .97 | 31.5 |