Greenfield New Hampshire Climate Data

Monthly Average Climate Data for Greenfield New Hampshire

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January12.4 °F31.0 °F3.54 in.
February13.6 °F34.1 °F3.28 in.
March21.5 °F42.0 °F4.04 in.
April32.5 °F55.7 °F3.92 in.
May43.4 °F66.8 °F3.86 in.
June52.9 °F75.6 °F4.4 in.
July58.1 °F80.6 °F4.13 in.
August56.2 °F79.0 °F4.07 in.
September48.6 °F71.8 °F4.19 in.
October37.8 °F58.9 °F5.21 in.
November28.5 °F47.3 °F3.89 in.
December19.1 °F36.6 °F4.39 in.
Annual35.4 °F56.6 °F48.92 in.

Climate Data for Greenfield New Hampshire

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateJun. 1 - Jun. 10
Average Days With Frost150-180 Days
Plant Hardiness Zone - 2023Zone 5b : -15°F to -10°F
Plant Hardiness Zone - 2012Zone 5b : -15°F to -10°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year