Sunapee New Hampshire Climate Data

Monthly Average Climate Data for Sunapee New Hampshire

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January8.7 °F28.8 °F3.04 in.
February10.1 °F31.8 °F2.74 in.
March18.8 °F39.6 °F3.28 in.
April31.3 °F54.1 °F3.61 in.
May41.8 °F66.8 °F3.61 in.
June51.8 °F75.1 °F4.42 in.
July56.8 °F79.7 °F4.42 in.
August54.3 °F78.2 °F3.84 in.
September46.0 °F70.9 °F3.91 in.
October37.1 °F57.8 °F5.21 in.
November26.9 °F45.3 °F3.59 in.
December18.4 °F34.6 °F3.89 in.
Annual33.5 °F55.2 °F45.56 in.

Climate Data for Sunapee New Hampshire

Average First Frost DateSep. 21 - Sep. 30
Average Last Frost DateJun. 11 - Jun. 20
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