Dublin, New Hampshire has a Humid Continental Mild Summer, Wet All Year climate (Köppen classification: Dfb). Average annual temperatures range from 37 °F (low) to 54.5 °F (high). Annual precipitation averages 53 Inches. Dublin is located in USDA Plant Hardiness Zone 6a. The growing season typically runs from the last frost around May 21 - May 31 through the first frost around Sep. 21 - Sep. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 12.9 °F | 28.7 °F | 3.9 in. |
| February | 15.4 °F | 32.4 °F | 3.75 in. |
| March | 21.9 °F | 39.4 °F | 4.28 in. |
| April | 34.4 °F | 53.4 °F | 3.89 in. |
| May | 43.1 °F | 65.1 °F | 4.01 in. |
| June | 55.9 °F | 73.4 °F | 4.58 in. |
| July | 61.7 °F | 78.4 °F | 5.16 in. |
| August | 56.1 °F | 76.8 °F | 4.55 in. |
| September | 49.0 °F | 69.7 °F | 4.29 in. |
| October | 41.7 °F | 57.1 °F | 5.55 in. |
| November | 30.0 °F | 44.7 °F | 4.19 in. |
| December | 21.9 °F | 34.6 °F | 4.8 in. |
| Annual | 37 °F | 54.5 °F | 52.95 in. |
| Average First Frost Date | Sep. 21 - Sep. 30 |
| Average Last Frost Date | May 21 - May 31 |
| Average Days With Frost | 150-180 Days |
| Plant Hardiness Zone | Zone 6a : -10°F to -5°F |
| Plant Hardiness Zone - 2012 | Zone 6a : -10°F to -5°F |
| Current Drought Conditions | Moderate Drought |
| Köppen Climate Classification | Dfb - Humid Continental Mild Summer, Wet All Year |