Fairmount Illinois Climate Data

Monthly Average Climate Data for Fairmount Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January17.9 °F33.7 °F2.44 in.
February21.1 °F38.4 °F2.06 in.
March30.4 °F50.1 °F2.87 in.
April41.0 °F63.5 °F4.12 in.
May52.5 °F74.0 °F4.56 in.
June61.6 °F82.3 °F4.76 in.
July64.1 °F84.5 °F4.32 in.
August61.7 °F83.2 °F3.1 in.
September54.5 °F78.5 °F3.07 in.
October42.9 °F66.0 °F3.37 in.
November32.4 °F51.2 °F3.32 in.
December23.7 °F38.7 °F2.48 in.
Annual42 °F62 °F40.47 in.

Climate Data for Fairmount Illinois

Average First Frost DateOct. 11 - Oct. 20
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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