Raleigh Illinois Climate Data

Monthly Average Climate Data for Raleigh Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January24.4 °F41.1 °F3.74 in.
February27.2 °F46.1 °F3.12 in.
March35.3 °F56.0 °F4.24 in.
April45.3 °F67.9 °F5.02 in.
May55.9 °F76.6 °F5.22 in.
June64.4 °F84.7 °F4.69 in.
July67.6 °F87.8 °F3.89 in.
August65.2 °F87.1 °F2.95 in.
September57.6 °F81.7 °F3.15 in.
October45.7 °F70.1 °F3.41 in.
November35.7 °F56.4 °F4.1 in.
December28.1 °F45.4 °F3.7 in.
Annual46 °F66.7 °F47.23 in.

Climate Data for Raleigh Illinois

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateApr. 11 - Apr. 20
Average Days With Frost75-100 Days
Plant Hardiness Zone - 2023Zone 7a : 0°F to 5°F
Plant Hardiness Zone - 2012Zone 6b : -5°F to 0°F
Current Drought ConditionsNormal
Köppen Climate ClassificationCfa - Humid Subtropical Climate
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