Seabrook New Hampshire Climate Data

Monthly Average Climate Data for Seabrook New Hampshire

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-8.4 °C1.4 °C95.76 mm
February-7.7 °C2.8 °C92.46 mm
March-3.4 °C6.7 °C118.87 mm
April1.9 °C13.4 °C111 mm
May7.6 °C18.9 °C105.41 mm
June13.1 °C24.3 °C113.28 mm
July16.4 °C27.7 °C90.42 mm
August15.6 °C27 °C90.17 mm
September11.5 °C22.9 °C101.09 mm
October5.2 °C16.1 °C127.25 mm
November-0.1 °C10 °C101.09 mm
December-4.8 °C4.3 °C121.41 mm
Annual3.9 °C14.6 °C1268.21 mm

Climate Data for Seabrook 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 6b : -20.6°C to -17.8°C
Plant Hardiness Zone - 2012Zone 6a : -23.3°C to -20.6°C
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year