Dover New Hampshire Climate Data

Monthly Average Climate Data for Dover New Hampshire

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January14.4 °F33.2 °F3.06 in.
February16.1 °F35.9 °F3.11 in.
March23.9 °F43.5 °F3.83 in.
April33.9 °F55.9 °F4.15 in.
May44.0 °F66.5 °F3.64 in.
June53.3 °F75.9 °F4.07 in.
July59.3 °F81.6 °F3.82 in.
August57.6 °F80.7 °F3.49 in.
September49.9 °F73.2 °F3.65 in.
October38.5 °F60.8 °F4.54 in.
November29.9 °F49.3 °F3.78 in.
December21.2 °F38.3 °F4.17 in.
Annual36.8 °F57.9 °F45.31 in.

Climate Data for Dover New Hampshire

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 21 - May 31
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 6a : -10°F to -5°F
Plant Hardiness Zone - 2012Zone 5b : -15°F to -10°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year