| 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 5a: -20F to -15F |
| 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: | 53d - Lake Michigan Lacustrine Clay Plain |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 54913 - Appleton, WI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 7 | 12 | 22 | 34 | 46 | 56 | 61 | 59 | 50 | 39 | 27 | 14 | 35 |
| Avg Max Temp (°F) | 24 | 29 | 40 | 54 | 68 | 77 | 81 | 78 | 70 | 58 | 42 | 29 | 54 |
| Avg Precip (In.) | 1.26 | 1.05 | 2.06 | 2.83 | 3.14 | 3.64 | 3.53 | 3.94 | 3.29 | 2.34 | 2.27 | 1.39 | 30.74 |