Napoleon Ohio Climate Data

Monthly Average Climate Data for Napoleon Ohio

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January17.7 °F32.7 °F2.5 in.
February19.4 °F36.0 °F2.16 in.
March27.5 °F46.5 °F2.51 in.
April37.7 °F60.2 °F3.51 in.
May49.4 °F71.7 °F4.21 in.
June59.4 °F81.2 °F3.75 in.
July62.6 °F84.9 °F3.7 in.
August60.5 °F82.9 °F3.85 in.
September52.9 °F76.9 °F3.13 in.
October42.0 °F64.0 °F2.71 in.
November32.0 °F49.4 °F2.85 in.
December23.7 °F37.7 °F2.53 in.
Annual40.4 °F60.3 °F37.41 in.

Climate Data for Napoleon Ohio

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 1 - May 10
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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