Knox Indiana Climate Data

Monthly Average Climate Data for Knox Indiana

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January16.0 °F31.8 °F2.58 in.
February18.8 °F35.8 °F2.29 in.
March27.4 °F47.0 °F2.52 in.
April37.8 °F59.5 °F3.67 in.
May49.6 °F70.7 °F4.34 in.
June59.4 °F79.9 °F4.48 in.
July61.8 °F82.7 °F4.54 in.
August59.9 °F81.0 °F4.29 in.
September52.0 °F75.8 °F3.42 in.
October41.1 °F63.5 °F3.42 in.
November31.3 °F49.0 °F2.91 in.
December22.2 °F37.2 °F2.42 in.
Annual39.8 °F59.5 °F40.88 in.

Climate Data for Knox Indiana

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 11 - May 20
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 5b : -15°F to -10°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
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