| 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: | 51f - Green Bay Till and Lacustrine Plain |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 54929 - Clintonville, WI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 4 | 8 | 20 | 32 | 44 | 53 | 58 | 55 | 46 | 35 | 24 | 11 | 32 |
| Avg Max Temp (°F) | 23 | 29 | 40 | 54 | 68 | 77 | 81 | 78 | 69 | 58 | 42 | 28 | 54 |
| Avg Precip (In.) | 1.28 | .99 | 2.08 | 2.67 | 3.46 | 3.63 | 3.98 | 4.1 | 3.61 | 2.4 | 2.29 | 1.43 | 31.93 |