Stratham New Hampshire Climate Data

Monthly Average Climate Data for Stratham New Hampshire

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January15.6 °F33.7 °F3.54 in.
February17.1 °F36.4 °F3.42 in.
March24.8 °F43.8 °F4.4 in.
April34.8 °F56.1 °F4.41 in.
May44.9 °F66.5 °F3.95 in.
June54.7 °F75.9 °F4.25 in.
July60.3 °F81.7 °F3.76 in.
August58.8 °F80.6 °F3.46 in.
September51.1 °F73.2 °F4.03 in.
October39.8 °F61.0 °F4.95 in.
November30.8 °F49.8 °F3.97 in.
December22.1 °F38.9 °F4.57 in.
Annual37.9 °F58.1 °F48.71 in.

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