Hanover New Hampshire Climate Data

Monthly Average Climate Data for Hanover New Hampshire

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-13 °C-1.7 °C68.83 mm
February-12.2 °C0.3 °C61.21 mm
March-7.1 °C5.2 °C77.98 mm
April-0.3 °C13.2 °C81.28 mm
May6.3 °C20.3 °C80.01 mm
June11.3 °C24.9 °C90.68 mm
July14.4 °C27.7 °C107.7 mm
August13.4 °C26.8 °C84.33 mm
September9.2 °C22.7 °C87.63 mm
October2.8 °C14.9 °C101.85 mm
November-2.5 °C7.9 °C76.45 mm
December-8.1 °C1.2 °C84.33 mm
Annual1.2 °C13.6 °C1002.28 mm

Climate Data for Hanover New Hampshire

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 21 - May 31
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 5a : -28.9°C to -26.1°C
Plant Hardiness Zone - 2012Zone 5a : -28.9°C to -26.1°C
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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