Hanover New Hampshire Climate Data

Monthly Average Climate Data for Hanover New Hampshire

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January8.6 °F28.9 °F2.71 in.
February10.1 °F32.5 °F2.41 in.
March19.3 °F41.4 °F3.07 in.
April31.4 °F55.7 °F3.2 in.
May43.3 °F68.6 °F3.15 in.
June52.4 °F76.8 °F3.57 in.
July58.0 °F81.8 °F4.24 in.
August56.1 °F80.2 °F3.32 in.
September48.6 °F72.9 °F3.45 in.
October37.1 °F58.8 °F4.01 in.
November27.5 °F46.2 °F3.01 in.
December17.5 °F34.2 °F3.32 in.
Annual34.2 °F56.5 °F39.46 in.

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 : -20°F to -15°F
Plant Hardiness Zone - 2012Zone 5a : -20°F to -15°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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