Dundas Illinois Climate Data

Monthly Average Climate Data for Dundas Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January22.1 °F38.0 °F3.24 in.
February25.0 °F42.9 °F2.48 in.
March33.7 °F53.6 °F3.75 in.
April44.0 °F65.7 °F4.87 in.
May55.0 °F75.4 °F5.04 in.
June63.8 °F83.8 °F4.91 in.
July66.3 °F87.0 °F4.47 in.
August64.0 °F86.1 °F2.97 in.
September56.1 °F80.8 °F3.35 in.
October44.9 °F68.8 °F3.55 in.
November34.6 °F54.3 °F3.89 in.
December26.6 °F42.5 °F3.18 in.
Annual44.7 °F64.9 °F45.7 in.

Climate Data for Dundas Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateApr. 11 - Apr. 20
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 ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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