Somersworth New Hampshire Climate Data

Monthly Average Climate Data for Somersworth New Hampshire

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-9.8 °C0.3 °C83.57 mm
February-8.9 °C1.8 °C82.55 mm
March-4.3 °C6 °C104.65 mm
April1.4 °C13.1 °C108.2 mm
May7.1 °C19.1 °C91.44 mm
June12.3 °C24.3 °C103.38 mm
July15.4 °C27.4 °C93.22 mm
August14.6 °C26.8 °C87.63 mm
September10.3 °C22.7 °C90.68 mm
October4.2 °C15.7 °C120.9 mm
November-0.9 °C9.3 °C97.79 mm
December-6 °C3.2 °C110.74 mm
Annual3 °C14.1 °C1174.75 mm

Climate Data for Somersworth 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
2024 plantmaps.com