Windham New Hampshire Climate Data

Monthly Average Climate Data for Windham New Hampshire

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January14.5 °F33.9 °F3.28 in.
February16.3 °F36.8 °F3.28 in.
March24.1 °F44.6 °F4.15 in.
April34.8 °F57.7 °F4.02 in.
May45.3 °F68.5 °F3.85 in.
June54.7 °F77.4 °F4.33 in.
July60.4 °F82.8 °F3.77 in.
August58.6 °F81.4 °F3.8 in.
September50.9 °F74.2 °F4.05 in.
October38.9 °F61.5 °F4.85 in.
November29.8 °F50.1 °F3.9 in.
December21.0 °F39.4 °F4.35 in.
Annual37.4 °F59 °F47.63 in.

Climate Data for Windham 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 5b : -15°F to -10°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year