Durham New Hampshire Climate Data

Monthly Average Climate Data for Durham New Hampshire

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January14.7 °F33.4 °F2.97 in.
February16.3 °F36.1 °F3.04 in.
March24.1 °F43.6 °F3.71 in.
April34.1 °F55.9 °F4.1 in.
May44.1 °F66.5 °F3.64 in.
June53.5 °F75.9 °F4.05 in.
July59.4 °F81.5 °F3.89 in.
August57.8 °F80.7 °F3.59 in.
September50.0 °F73.2 °F3.81 in.
October38.6 °F60.9 °F4.44 in.
November29.9 °F49.5 °F3.8 in.
December21.4 °F38.5 °F4.1 in.
Annual37 °F58 °F45.14 in.

Climate Data for Durham 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
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