Arthur Illinois Climate Data

Monthly Average Climate Data for Arthur Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January19.3 °F35.0 °F2.41 in.
February22.3 °F39.6 °F2.11 in.
March31.5 °F51.0 °F2.85 in.
April42.1 °F64.1 °F4.49 in.
May53.6 °F74.5 °F4.5 in.
June62.5 °F83.1 °F4.39 in.
July65.5 °F85.8 °F4.05 in.
August63.1 °F84.5 °F2.68 in.
September55.4 °F79.7 °F3.12 in.
October43.9 °F67.0 °F3.36 in.
November33.1 °F52.0 °F3.37 in.
December25.1 °F40.0 °F2.54 in.
Annual43.1 °F63 °F39.87 in.

Climate Data for Arthur 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 6a : -10°F to -5°F
Plant Hardiness Zone - 2012Zone 6a : -10°F to -5°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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