Durham New Hampshire Climate Data

Monthly Average Climate Data for Durham New Hampshire

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-9.6 °C0.8 °C75.44 mm
February-8.7 °C2.3 °C77.22 mm
March-4.4 °C6.4 °C94.23 mm
April1.2 °C13.3 °C104.14 mm
May6.7 °C19.2 °C92.46 mm
June11.9 °C24.4 °C102.87 mm
July15.2 °C27.5 °C98.81 mm
August14.3 °C27.1 °C91.19 mm
September10 °C22.9 °C96.77 mm
October3.7 °C16.1 °C112.78 mm
November-1.2 °C9.7 °C96.52 mm
December-5.9 °C3.6 °C104.14 mm
Annual2.8 °C14.4 °C1146.57 mm

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 : -23.3°C to -20.6°C
Plant Hardiness Zone - 2012Zone 5b : -26.1°C to -23.3°C
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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