Seabrook New Hampshire Climate Data

Monthly Average Climate Data for Seabrook New Hampshire

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January16.8 °F34.5 °F3.77 in.
February18.1 °F37.0 °F3.64 in.
March25.8 °F44.1 °F4.68 in.
April35.4 °F56.2 °F4.37 in.
May45.6 °F66.0 °F4.15 in.
June55.6 °F75.7 °F4.46 in.
July61.5 °F81.8 °F3.56 in.
August60.0 °F80.6 °F3.55 in.
September52.7 °F73.2 °F3.98 in.
October41.3 °F60.9 °F5.01 in.
November31.9 °F50.0 °F3.98 in.
December23.3 °F39.8 °F4.78 in.
Annual39 °F58.3 °F49.93 in.

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 : -5°F to 0°F
Plant Hardiness Zone - 2012Zone 6a : -10°F to -5°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year