Morrison Illinois Climate Data

Monthly Average Climate Data for Morrison Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January12.9 °F29.6 °F1.67 in.
February16.6 °F34.1 °F1.77 in.
March27.3 °F46.7 °F2.5 in.
April38.1 °F60.3 °F3.78 in.
May49.9 °F71.7 °F4.84 in.
June59.8 °F80.9 °F5.13 in.
July63.2 °F83.9 °F4.16 in.
August61.0 °F82.3 °F4.08 in.
September52.6 °F76.2 °F3.67 in.
October41.0 °F63.2 °F2.8 in.
November29.6 °F48.0 °F2.33 in.
December19.3 °F35.1 °F2.05 in.
Annual39.3 °F59.3 °F38.78 in.

Climate Data for Morrison Illinois

Average First Frost DateOct. 1 - Oct. 10
Average Last Frost DateMay 1 - May 10
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 5b : -15°F to -10°F
Plant Hardiness Zone - 2012Zone 5a : -20°F to -15°F
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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