Evanston Illinois Climate Data

Monthly Average Climate Data for Evanston Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January19.8 °F32.2 °F2.35 in.
February22.8 °F36.1 °F2.28 in.
March31.2 °F45.6 °F2.21 in.
April40.9 °F56.8 °F3.88 in.
May51.1 °F67.0 °F4.54 in.
June61.4 °F76.5 °F4.45 in.
July68.2 °F81.1 °F3.83 in.
August67.8 °F79.6 °F4.18 in.
September60.4 °F73.4 °F3.53 in.
October47.9 °F62.0 °F3.58 in.
November36.1 °F48.6 °F2.69 in.
December25.7 °F37.4 °F2.42 in.
Annual44.4 °F58 °F39.94 in.

Climate Data for Evanston Illinois

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateMay 1 - May 10
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 6a : -10°F to -5°F
Plant Hardiness Zone - 2012Zone 5b : -15°F to -10°F
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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