Thornton New Hampshire Climate Data

Monthly Average Climate Data for Thornton New Hampshire

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-12.7 °C-2.6 °C88.39 mm
February-12 °C-1.2 °C79.25 mm
March-7 °C3.3 °C88.14 mm
April-0.4 °C10.8 °C106.93 mm
May6.1 °C18.2 °C111.76 mm
June11 °C22.6 °C117.35 mm
July13.7 °C25.1 °C126.49 mm
August12.9 °C24.3 °C117.09 mm
September8.8 °C20.1 °C110.49 mm
October2.7 °C12.9 °C142.49 mm
November-2.6 °C6.1 °C100.84 mm
December-8.3 °C0.4 °C117.35 mm
Annual1 °C11.7 °C1306.57 mm

Climate Data for Thornton 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 5a : -28.9°C to -26.1°C
Plant Hardiness Zone - 2012Zone 5a : -28.9°C to -26.1°C
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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