Sandown New Hampshire Climate Data

Monthly Average Climate Data for Sandown New Hampshire

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January14.7 °F33.7 °F3.2 in.
February16.4 °F36.6 °F3.26 in.
March24.2 °F44.4 °F4.18 in.
April34.7 °F57.3 °F4.11 in.
May45.2 °F68.1 °F3.97 in.
June54.7 °F77.0 °F4.1 in.
July60.4 °F82.5 °F3.54 in.
August58.6 °F81.1 °F3.69 in.
September50.9 °F73.7 °F3.83 in.
October39.4 °F61.0 °F4.88 in.
November30.2 °F49.8 °F3.81 in.
December21.3 °F39.0 °F4.3 in.
Annual37.6 °F58.7 °F46.87 in.

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 : -10°F to -5°F
Plant Hardiness Zone - 2012Zone 5b : -15°F to -10°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year