Grafton New York Climate Data

Monthly Average Climate Data for Grafton New York

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-10 °C-1.2 °C81.53 mm
February-9.3 °C0.4 °C68.83 mm
March-5.1 °C4.8 °C88.9 mm
April1.2 °C12.6 °C95.5 mm
May7.6 °C19.2 °C105.16 mm
June12.6 °C23.4 °C129.79 mm
July15.1 °C26 °C121.16 mm
August14.3 °C24.9 °C115.82 mm
September10.3 °C21.2 °C112.27 mm
October4.7 °C14.4 °C132.33 mm
November-1.3 °C7.5 °C91.44 mm
December-6.3 °C1.6 °C100.33 mm
Annual2.8 °C12.9 °C1243.06 mm

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 : -26.1°C to -23.3°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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