Milton New Hampshire Climate Data

Monthly Average Climate Data for Milton New Hampshire

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January13.9 °F31.0 °F3.49 in.
February14.7 °F33.9 °F3.4 in.
March23.1 °F41.7 °F4.24 in.
April33.8 °F55.4 °F4.25 in.
May44.8 °F66.9 °F3.77 in.
June54.4 °F76.0 °F4.41 in.
July59.9 °F81.5 °F4.08 in.
August58.5 °F79.9 °F3.84 in.
September50.9 °F72.1 °F3.86 in.
October40.1 °F59.1 °F4.99 in.
November30.1 °F47.2 °F4.16 in.
December20.8 °F36.5 °F4.53 in.
Annual37.1 °F56.8 °F49.02 in.

Climate Data for Milton 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