| 2023 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 4b: -25°F to -20°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 | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 53518 - Blue River, WI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 5 | 11 | 23 | 35 | 46 | 56 | 60 | 58 | 49 | 38 | 25 | 13 | 35 |
| Avg Max Temp (°F) | 25 | 31 | 43 | 58 | 70 | 79 | 83 | 80 | 72 | 60 | 44 | 30 | 56 |
| Avg Precip (In.) | 1.09 | 1.14 | 2.09 | 3.49 | 3.7 | 4.17 | 4.28 | 4.41 | 3.46 | 2.29 | 2.37 | 1.31 | 33.81 |