Rochester New Hampshire Climate Data

Monthly Average Climate Data for Rochester New Hampshire

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January14.4 °F32.4 °F3.54 in.
February15.9 °F35.2 °F3.38 in.
March24.2 °F42.9 °F4.44 in.
April34.4 °F55.8 °F4.41 in.
May44.7 °F66.7 °F3.79 in.
June54.1 °F75.9 °F4.28 in.
July59.8 °F81.5 °F3.9 in.
August58.3 °F80.4 °F3.74 in.
September50.6 °F73.0 °F3.79 in.
October39.3 °F60.4 °F4.94 in.
November30.2 °F48.6 °F4.32 in.
December21.2 °F37.7 °F4.6 in.
Annual37.3 °F57.5 °F49.13 in.

Climate Data for Rochester 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