Grafton New York Climate Data

Monthly Average Climate Data for Grafton New York

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January14.0 °F29.8 °F3.21 in.
February15.3 °F32.7 °F2.71 in.
March22.9 °F40.7 °F3.5 in.
April34.2 °F54.7 °F3.76 in.
May45.7 °F66.5 °F4.14 in.
June54.6 °F74.2 °F5.11 in.
July59.1 °F78.8 °F4.77 in.
August57.7 °F76.9 °F4.56 in.
September50.6 °F70.1 °F4.42 in.
October40.5 °F58.0 °F5.21 in.
November29.7 °F45.5 °F3.6 in.
December20.7 °F34.8 °F3.95 in.
Annual37.1 °F55.2 °F48.94 in.

Climate Data for Grafton New York

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 5b : -15°F to -10°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfb - Humid Continental Mild Summer, Wet All Year
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