Mount Vernon Ohio Climate Data

Monthly Average Climate Data for Mount Vernon Ohio

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January18.2 °F34.7 °F3.32 in.
February19.7 °F37.8 °F2.42 in.
March27.9 °F47.8 °F3.38 in.
April38.2 °F61.3 °F3.86 in.
May48.8 °F71.3 °F4.36 in.
June58.0 °F79.6 °F4.7 in.
July61.2 °F83.0 °F4.16 in.
August59.4 °F81.8 °F3.48 in.
September51.9 °F75.8 °F3.31 in.
October40.5 °F63.8 °F2.81 in.
November31.4 °F50.5 °F2.94 in.
December23.9 °F39.3 °F3.04 in.
Annual39.9 °F60.6 °F41.78 in.

Climate Data for Mount Vernon 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 5b : -15°F to -10°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation