Rossville Illinois Climate Data

Monthly Average Climate Data for Rossville Illinois

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-8.1 °C0.6 °C58.17 mm
February-6.4 °C3.2 °C49.28 mm
March-1.2 °C9.7 °C68.58 mm
April4.6 °C17.2 °C102.36 mm
May11.1 °C23.2 °C114.81 mm
June16.2 °C27.8 °C122.43 mm
July17.7 °C29.2 °C109.98 mm
August16.5 °C28.3 °C85.34 mm
September12.3 °C25.8 °C77.22 mm
October6 °C18.8 °C83.31 mm
November0.2 °C10.3 °C76.45 mm
December-4.9 °C3.4 °C58.93 mm
Annual5.3 °C16.5 °C1006.86 mm

Climate Data for Rossville 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 : -23.3°C to -20.6°C
Plant Hardiness Zone - 2012Zone 5b : -26.1°C to -23.3°C
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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