Wilton New Hampshire Climate Data

Monthly Average Climate Data for Wilton New Hampshire

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-10.1 °C0.4 °C89.15 mm
February-9.3 °C2.2 °C85.09 mm
March-4.8 °C6.6 °C103.12 mm
April1.2 °C13.9 °C104.14 mm
May7.1 °C20.1 °C98.55 mm
June12.3 °C25.1 °C109.73 mm
July15.3 °C28 °C101.09 mm
August14.2 °C27.1 °C99.82 mm
September9.9 °C23 °C104.39 mm
October3.6 °C15.8 °C128.78 mm
November-1.6 °C9.6 °C100.84 mm
December-6.5 °C3.4 °C113.03 mm
Annual2.6 °C14.6 °C1237.73 mm

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 : -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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