Rossville Illinois Climate Data

Monthly Average Climate Data for Rossville Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January17.5 °F33.1 °F2.29 in.
February20.5 °F37.7 °F1.94 in.
March29.9 °F49.4 °F2.7 in.
April40.3 °F63.0 °F4.03 in.
May51.9 °F73.7 °F4.52 in.
June61.2 °F82.0 °F4.82 in.
July63.9 °F84.5 °F4.33 in.
August61.7 °F83.0 °F3.36 in.
September54.1 °F78.5 °F3.04 in.
October42.8 °F65.9 °F3.28 in.
November32.4 °F50.6 °F3.01 in.
December23.1 °F38.1 °F2.32 in.
Annual41.6 °F61.6 °F39.64 in.

Climate Data for Rossville Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateApr. 21 - Apr. 30
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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