| 2023 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 4b: -25°F to -20°F |
| 2012 Hardiness Zone: | Zone 4b: -25°F to -20°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: | 51c - Glacial Lake Wisconsin Sand Plain |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 54615 - Black River Falls, WI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 2 | 8 | 20 | 32 | 43 | 53 | 58 | 56 | 46 | 35 | 23 | 9 | 32 |
| Avg Max Temp (°F) | 24 | 31 | 43 | 58 | 71 | 79 | 83 | 81 | 72 | 60 | 42 | 28 | 56 |
| Avg Precip (In.) | 1.07 | .94 | 1.96 | 3.02 | 3.64 | 4.31 | 4.53 | 4.46 | 3.76 | 2.34 | 2.2 | 1.28 | 33.49 |