Fairview Heights Illinois Climate Data

Monthly Average Climate Data for Fairview Heights Illinois

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-4.6 °C4.4 °C71.12 mm
February-2.8 °C7.3 °C61.98 mm
March2.2 °C13.1 °C90.93 mm
April8.1 °C19.7 °C126.24 mm
May14.1 °C24.7 °C133.1 mm
June19 °C29.6 °C131.06 mm
July21.1 °C31.3 °C113.54 mm
August19.9 °C30.7 °C95.76 mm
September15.4 °C27.1 °C86.87 mm
October9.3 °C20.6 °C82.8 mm
November2.7 °C12.8 °C95.25 mm
December-2 °C6.8 °C72.14 mm
Annual8.5 °C19 °C1160.79 mm

Climate Data for Fairview Heights Illinois

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateApr. 21 - Apr. 30
Average Days With Frost75-100 Days
Plant Hardiness Zone - 2023Zone 7a : -17.8°C to -15°C
Plant Hardiness Zone - 2012Zone 6b : -20.6°C to -17.8°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationCfa - Humid Subtropical Climate
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