| 2023 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 4b: -25°F to -20°F Zone 4a: -30°F to -25°F |
| 2012 Hardiness Zone: | Zone 4b: -25°F to -20°F Zone 4a: -30°F to -25°F |
| 1990 Hardiness Zone: | Zone 4a: -30F to -25F |
| Average First Frost Date: | Sep. 21 - Sep. 30 |
| Average Last Frost Date: | May 1 - May 10 |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year |
| Ecoregion: | 58n - White Mountain Foothills |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 03598 - Whitefield, NH | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 4 | 6 | 17 | 29 | 41 | 50 | 54 | 53 | 45 | 34 | 26 | 12 | 31 |
| Avg Max Temp (°F) | 26 | 29 | 40 | 52 | 67 | 75 | 79 | 77 | 68 | 56 | 42 | 30 | 53 |
| Avg Precip (In.) | 2.49 | 1.97 | 2.39 | 2.69 | 3.15 | 3.87 | 4.01 | 4.24 | 3.43 | 3.21 | 3.1 | 2.63 | 37.19 |