Swanzey New Hampshire Climate Data

Monthly Average Climate Data for Swanzey New Hampshire

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-11.5 °C-0.4 °C83.06 mm
February-10.8 °C1.3 °C72.64 mm
March-5.9 °C5.9 °C86.36 mm
April0.4 °C13.4 °C89.66 mm
May6.4 °C19.9 °C95 mm
June11.6 °C24.7 °C109.47 mm
July14.4 °C27.6 °C109.47 mm
August13.4 °C26.7 °C105.41 mm
September8.9 °C22.4 °C103.89 mm
October2.9 °C15.4 °C123.95 mm
November-2.4 °C8.6 °C89.66 mm
December-7.3 °C2.6 °C100.08 mm
Annual1.7 °C14 °C1168.65 mm

Climate Data for Swanzey New Hampshire

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 11 - May 20
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 5b : -26.1°C to -23.3°C
Plant Hardiness Zone - 2012Zone 5b : -26.1°C to -23.3°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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