| 2023 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 4b: -25°F to -20°F Zone 5b: -15°F to -10°F |
| 2012 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 4b: -25°F to -20°F Zone 4a: -30°F to -25°F |
| 1990 Hardiness Zone: | Zone 4b: -25F to -20F |
| Average First Frost Date: | Sep.11 - Sep. 20 |
| Average Last Frost Date: | Jun. 11 - Jun. 20 |
| Koppen-Geiger Climate Zone: | Dfc - Subarctic With Cool Summers And Year Around Rainfall |
| Ecoregion: | 58m - Quebec/New England Boundary Mountains |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 03570 - Berlin, NH | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 4 | 6 | 17 | 30 | 41 | 50 | 55 | 53 | 44 | 34 | 25 | 12 | 31 |
| Avg Max Temp (°F) | 26 | 29 | 39 | 51 | 65 | 73 | 78 | 76 | 67 | 56 | 43 | 31 | 53 |
| Avg Precip (In.) | 2.81 | 2.22 | 2.85 | 3.2 | 3.47 | 3.97 | 3.74 | 4.01 | 3.6 | 3.98 | 3.63 | 2.99 | 40.48 |