| 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 03303 - Concord, NH | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg Min Temp (°F) | 9 | 12 | 22 | 32 | 42 | 52 | 57 | 55 | 46 | 35 | 27 | 16 | 34 |
| Avg Max Temp (°F) | 30 | 34 | 43 | 56 | 68 | 77 | 82 | 80 | 71 | 60 | 47 | 35 | 57 |
| Avg Precip (In.) | 3.15 | 2.42 | 3.08 | 3.15 | 3.4 | 3.4 | 3.68 | 3.51 | 3.29 | 3.65 | 3.67 | 3.09 | 39.49 |