Casey Illinois Climate Data

Monthly Average Climate Data for Casey Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January20.8 °F36.8 °F3.03 in.
February23.6 °F41.8 °F2.54 in.
March32.6 °F52.6 °F3.15 in.
April43.0 °F65.2 °F4.92 in.
May54.0 °F74.9 °F4.63 in.
June62.8 °F83.4 °F4.92 in.
July65.6 °F86.6 °F4.24 in.
August63.5 °F85.6 °F3.01 in.
September55.7 °F80.2 °F3.02 in.
October44.3 °F67.7 °F3.7 in.
November33.9 °F53.2 °F3.81 in.
December25.6 °F41.3 °F2.89 in.
Annual43.8 °F64.1 °F43.86 in.

Climate Data for Casey Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateApr. 21 - Apr. 30
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 6b : -5°F to 0°F
Plant Hardiness Zone - 2012Zone 6a : -10°F to -5°F
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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