| 2023 Hardiness Zone: | Zone 6a: -10°F to -5°F Zone 5a: -20°F to -15°F Zone 5b: -15°F to -10°F | |
| 2012 Hardiness Zone: | Zone 6a: -10°F to -5°F 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 11 - May 20 | |
| Koppen-Geiger Climate Zone: | Dfb - Humid Continental Mild Summer, Wet All Year | |
| Ecoregion: | 58q - Sunapee Uplands | |
| Current Drought Status: | Exceptional Drought | |
| Heat Zone Days: | Rare Over 86°F |
Annual Climate Data for ZIP Code 03216 - Andover, NH | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 8 | 10 | 21 | 31 | 42 | 51 | 56 | 54 | 46 | 35 | 27 | 15 | 33 |
| Avg Max Temp (°F) | 29 | 33 | 42 | 54 | 67 | 75 | 80 | 78 | 69 | 58 | 45 | 34 | 55 |
| Avg Precip (In.) | 3.67 | 2.98 | 3.74 | 3.88 | 4 | 3.87 | 4.02 | 3.9 | 3.65 | 4.21 | 4.23 | 3.84 | 45.98 |