Le Roy Illinois Climate Data

Monthly Average Climate Data for Le Roy Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January16.5 °F32.8 °F2.23 in.
February19.8 °F37.6 °F1.97 in.
March29.0 °F49.3 °F2.67 in.
April39.9 °F62.7 °F3.79 in.
May51.9 °F73.5 °F4.37 in.
June61.3 °F82.2 °F4.35 in.
July64.2 °F85.0 °F4.2 in.
August62.0 °F83.3 °F3.5 in.
September54.3 °F78.4 °F3.44 in.
October42.6 °F65.4 °F3.42 in.
November31.6 °F50.5 °F2.87 in.
December22.3 °F37.9 °F2.38 in.
Annual41.3 °F61.6 °F39.19 in.

Climate Data for Le Roy 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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