Ruma Illinois Climate Data

Monthly Average Climate Data for Ruma Illinois

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-5 °C4.9 °C67.06 mm
February-3.2 °C7.8 °C62.74 mm
March1.4 °C13.4 °C91.69 mm
April7.1 °C20 °C123.95 mm
May13.2 °C25.1 °C131.32 mm
June18.1 °C30 °C111 mm
July20.1 °C31.7 °C101.35 mm
August18.8 °C31.2 °C80.26 mm
September14.1 °C27.6 °C83.31 mm
October7.7 °C21.3 °C78.74 mm
November1.9 °C13.4 °C95.76 mm
December-2.8 °C7.1 °C75.69 mm
Annual7.6 °C19.5 °C1102.87 mm

Climate Data for Ruma 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 : -17.8°C to -15°C
Plant Hardiness Zone - 2012Zone 6b : -20.6°C to -17.8°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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