| 2023 Hardiness Zone: | Zone 5a: -20°F to -15°F |
| 2012 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 4b: -25°F to -20°F |
| 1990 Hardiness Zone: | Zone 4b: -25F to -20F |
| 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: | 52b - Paleozoic Plateau/Coulee Section |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 54623 - Coon Valley, WI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 6 | 12 | 23 | 35 | 47 | 56 | 60 | 58 | 50 | 39 | 26 | 12 | 35 |
| Avg Max Temp (°F) | 23 | 30 | 42 | 57 | 70 | 78 | 82 | 79 | 71 | 59 | 42 | 28 | 55 |
| Avg Precip (In.) | .99 | .9 | 1.78 | 3.46 | 3.62 | 4.08 | 4.55 | 4.53 | 3.71 | 2.26 | 2.15 | 1.19 | 33.21 |