| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 5b: -15°F to -10°F |
| 2012 Hardiness Zone: | Zone 5b: -15°F to -10°F |
| 1990 Hardiness Zone: | Zone 5a: -20F to -15F |
| Average First Frost Date: | Oct. 11 - Oct. 20 |
| Average Last Frost Date: | May 11 - May 20 |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year |
| Ecoregion: | 51g - Door Peninsula |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 54210 - Ellison Bay, WI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 8 | 10 | 20 | 31 | 42 | 52 | 59 | 58 | 51 | 40 | 28 | 17 | 35 |
| Avg Max Temp (°F) | 24 | 27 | 36 | 47 | 61 | 69 | 75 | 73 | 66 | 54 | 41 | 29 | 50 |
| Avg Precip (In.) | 1.83 | 1.22 | 2.08 | 2.53 | 2.8 | 3.2 | 3.26 | 3.49 | 3.47 | 2.65 | 2.49 | 1.81 | 30.81 |