Standard City Illinois Climate Data

Monthly Average Climate Data for Standard City Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January20.0 °F35.7 °F2.32 in.
February23.6 °F41.0 °F2.06 in.
March32.6 °F52.2 °F2.9 in.
April43.1 °F65.0 °F4.57 in.
May54.3 °F74.8 °F4.79 in.
June63.2 °F83.2 °F4.37 in.
July66.4 °F86.2 °F3.67 in.
August64.2 °F85.1 °F3.35 in.
September55.9 °F79.5 °F3.3 in.
October44.6 °F67.4 °F3.33 in.
November34.2 °F52.6 °F3.31 in.
December25.2 °F40.7 °F2.3 in.
Annual43.9 °F63.6 °F40.27 in.

Climate Data for Standard City 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 ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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