Wilton New Hampshire Climate Data

Monthly Average Climate Data for Wilton New Hampshire

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January13.9 °F32.8 °F3.51 in.
February15.2 °F35.9 °F3.35 in.
March23.4 °F43.9 °F4.06 in.
April34.1 °F57.1 °F4.1 in.
May44.8 °F68.2 °F3.88 in.
June54.2 °F77.1 °F4.32 in.
July59.5 °F82.4 °F3.98 in.
August57.6 °F80.7 °F3.93 in.
September49.8 °F73.4 °F4.11 in.
October38.5 °F60.5 °F5.07 in.
November29.1 °F49.2 °F3.97 in.
December20.3 °F38.2 °F4.45 in.
Annual36.7 °F58.3 °F48.73 in.

Climate Data for Wilton New Hampshire

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 21 - May 31
Average Days With Frost150-180 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
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