| 2023 Hardiness Zone: | Zone 5b: -15°F to -10°F | |
| 2012 Hardiness Zone: | Zone 5a: -20°F to -15°F Zone 5b: -15°F to -10°F | |
| 1990 Hardiness Zone: | Zone 5a: -20F to -15F | |
| Average First Frost Date: | Oct. 1 - Oct. 10 | |
| Average Last Frost Date: | May 21 - May 31 | |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year | |
| Ecoregion: | 59h - Gulf of Maine Coastal Plain | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 03229 - Contoocook, NH | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 9 | 11 | 22 | 32 | 42 | 51 | 56 | 55 | 46 | 35 | 27 | 16 | 34 |
| Avg Max Temp (°F) | 30 | 34 | 43 | 55 | 67 | 76 | 81 | 79 | 70 | 59 | 46 | 35 | 56 |
| Avg Precip (In.) | 3.46 | 2.71 | 3.44 | 3.6 | 3.76 | 3.58 | 3.55 | 3.65 | 3.39 | 3.84 | 3.94 | 3.57 | 42.49 |