Fairview Heights Illinois Climate Data

Monthly Average Climate Data for Fairview Heights Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January23.7 °F39.9 °F2.8 in.
February27.0 °F45.2 °F2.44 in.
March35.9 °F55.6 °F3.58 in.
April46.5 °F67.4 °F4.97 in.
May57.4 °F76.4 °F5.24 in.
June66.2 °F85.2 °F5.16 in.
July70.0 °F88.3 °F4.47 in.
August67.9 °F87.2 °F3.77 in.
September59.8 °F80.7 °F3.42 in.
October48.7 °F69.1 °F3.26 in.
November36.9 °F55.0 °F3.75 in.
December28.4 °F44.2 °F2.84 in.
Annual47.4 °F66.2 °F45.7 in.

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 : 0°F to 5°F
Plant Hardiness Zone - 2012Zone 6b : -5°F to 0°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationCfa - Humid Subtropical Climate
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