Sandown New Hampshire Climate Data

Monthly Average Climate Data for Sandown New Hampshire

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-9.6 °C0.9 °C81.28 mm
February-8.7 °C2.6 °C82.8 mm
March-4.3 °C6.9 °C106.17 mm
April1.5 °C14.1 °C104.39 mm
May7.3 °C20.1 °C100.84 mm
June12.6 °C25 °C104.14 mm
July15.8 °C28.1 °C89.92 mm
August14.8 °C27.3 °C93.73 mm
September10.5 °C23.2 °C97.28 mm
October4.1 °C16.1 °C123.95 mm
November-1 °C9.9 °C96.77 mm
December-5.9 °C3.9 °C109.22 mm
Annual3.1 °C14.8 °C1190.49 mm

Climate Data for Sandown 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