Grafton Ohio Climate Data

Monthly Average Climate Data for Grafton Ohio

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-6.9 °C1.2 °C68.07 mm
February-6.3 °C2.6 °C56.13 mm
March-1.9 °C7.7 °C71.88 mm
April4 °C15.3 °C93.22 mm
May10.1 °C21.4 °C101.09 mm
June15.4 °C26.3 °C102.11 mm
July17.4 °C28.4 °C94.23 mm
August16.3 °C27.5 °C92.46 mm
September12.6 °C24.1 °C95.5 mm
October6.5 °C17.3 °C85.6 mm
November1.2 °C10.2 °C74.42 mm
December-3.6 °C3.8 °C66.29 mm
Annual5.4 °C15.5 °C1001 mm

Climate Data for Grafton Ohio

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateMay 11 - May 20
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 6b : -20.6°C to -17.8°C
Plant Hardiness Zone - 2012Zone 6a : -23.3°C to -20.6°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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