Ontario Ohio Climate Data

Monthly Average Climate Data for Ontario Ohio

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January17.8 °F33.2 °F3.19 in.
February19.3 °F35.9 °F2.28 in.
March27.4 °F45.7 °F2.98 in.
April38.5 °F59.5 °F4.01 in.
May49.9 °F70.5 °F4.35 in.
June58.6 °F78.5 °F4.96 in.
July61.9 °F82.2 °F4.28 in.
August60.1 °F80.4 °F3.65 in.
September53.7 °F74.6 °F3.29 in.
October42.2 °F62.1 °F3.04 in.
November32.1 °F48.6 °F3.01 in.
December23.9 °F37.9 °F2.98 in.
Annual40.5 °F59.1 °F42.02 in.

Climate Data for Ontario Ohio

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 11 - May 20
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 6a : -10°F to -5°F
Plant Hardiness Zone - 2012Zone 6a : -10°F to -5°F
Current Drought ConditionsSevere Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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