Rochester New Hampshire Climate Data

Monthly Average Climate Data for Rochester New Hampshire

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-9.8 °C0.2 °C89.92 mm
February-8.9 °C1.8 °C85.85 mm
March-4.3 °C6.1 °C112.78 mm
April1.3 °C13.2 °C112.01 mm
May7.1 °C19.3 °C96.27 mm
June12.3 °C24.4 °C108.71 mm
July15.4 °C27.5 °C99.06 mm
August14.6 °C26.9 °C95 mm
September10.3 °C22.8 °C96.27 mm
October4.1 °C15.8 °C125.48 mm
November-1 °C9.2 °C109.73 mm
December-6 °C3.2 °C116.84 mm
Annual2.9 °C14.2 °C1247.92 mm

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 : -23.3°C to -20.6°C
Plant Hardiness Zone - 2012Zone 5b : -26.1°C to -23.3°C
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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