Grafton Ohio Climate Data

Monthly Average Climate Data for Grafton Ohio

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January19.5 °F34.1 °F2.68 in.
February20.7 °F36.6 °F2.21 in.
March28.5 °F45.8 °F2.83 in.
April39.2 °F59.6 °F3.67 in.
May50.1 °F70.6 °F3.98 in.
June59.7 °F79.3 °F4.02 in.
July63.4 °F83.1 °F3.71 in.
August61.4 °F81.5 °F3.64 in.
September54.6 °F75.3 °F3.76 in.
October43.7 °F63.2 °F3.37 in.
November34.2 °F50.3 °F2.93 in.
December25.6 °F38.9 °F2.61 in.
Annual41.7 °F59.9 °F39.41 in.

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 : -5°F to 0°F
Plant Hardiness Zone - 2012Zone 6a : -10°F to -5°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation