| 2023 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 5b: -15°F to -10°F |
| 2012 Hardiness Zone: | Zone 5a: -20°F to -15°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: | Dfa - Humid Continental Hot Summers |
| Ecoregion: | 53b - Kettle Moraines |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 53017 - Colgate, WI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 8 | 13 | 23 | 34 | 45 | 54 | 60 | 58 | 49 | 38 | 27 | 15 | 35 |
| Avg Max Temp (°F) | 25 | 30 | 41 | 54 | 67 | 77 | 81 | 79 | 71 | 59 | 43 | 30 | 55 |
| Avg Precip (In.) | 1.37 | 1.18 | 2.05 | 3.25 | 3.05 | 3.81 | 3.97 | 4.27 | 3.53 | 2.52 | 2.46 | 1.71 | 33.17 |