Londonderry New Hampshire Climate Data

Monthly Average Climate Data for Londonderry New Hampshire

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-9.2 °C0.8 °C82.3 mm
February-8.3 °C2.2 °C82.04 mm
March-4.2 °C6.6 °C102.62 mm
April1.9 °C13.8 °C101.09 mm
May7.4 °C19.9 °C95.5 mm
June12.7 °C24.8 °C107.95 mm
July15.7 °C27.8 °C93.47 mm
August14.6 °C27.1 °C95.5 mm
September10.6 °C23.1 °C99.82 mm
October4.4 °C15.8 °C121.92 mm
November-0.5 °C9.8 °C97.54 mm
December-5.8 °C3.6 °C108.97 mm
Annual3.3 °C14.6 °C1188.72 mm

Climate Data for Londonderry 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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