| 2023 Hardiness Zone: | Zone 4b: -25°F to -20°F |
| 2012 Hardiness Zone: | 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: | 51c - Glacial Lake Wisconsin Sand Plain |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 54646 - Necedah, WI | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 5 | 10 | 21 | 33 | 45 | 54 | 59 | 57 | 48 | 37 | 25 | 12 | 34 |
| Avg Max Temp (°F) | 25 | 32 | 44 | 59 | 72 | 80 | 84 | 81 | 72 | 60 | 43 | 29 | 57 |
| Avg Precip (In.) | .98 | .92 | 1.94 | 3.02 | 3.49 | 3.8 | 4.28 | 4.6 | 3.81 | 2.27 | 2.16 | 1.19 | 32.46 |