Union New Hampshire Climate Data

Monthly Average Climate Data for Union New Hampshire

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January13.4 °F30.6 °F3.42 in.
February14.1 °F33.5 °F3.48 in.
March22.4 °F41.7 °F4.0 in.
April33.4 °F55.3 °F4.11 in.
May44.6 °F67.4 °F3.7 in.
June54.2 °F76.2 °F4.41 in.
July59.7 °F81.5 °F4.18 in.
August58.4 °F79.8 °F3.86 in.
September50.7 °F71.9 °F3.83 in.
October39.6 °F58.8 °F5.01 in.
November29.8 °F46.9 °F4.11 in.
December20.6 °F36.1 °F4.58 in.
Annual36.7 °F56.6 °F48.69 in.

Climate Data for Union New Hampshire

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateJun. 1 - Jun. 10
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 5b : -15°F to -10°F
Plant Hardiness Zone - 2012Zone 5a : -20°F to -15°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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