Lebanon Illinois Climate Data

Monthly Average Climate Data for Lebanon Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January22.7 °F39.6 °F2.93 in.
February26.0 °F44.9 °F2.47 in.
March34.8 °F55.2 °F3.53 in.
April45.6 °F67.1 °F5.16 in.
May56.5 °F76.1 °F5.29 in.
June65.3 °F85.1 °F4.98 in.
July69.0 °F88.4 °F3.93 in.
August67.0 °F87.3 °F3.32 in.
September58.4 °F80.9 °F3.47 in.
October46.8 °F69.4 °F3.2 in.
November35.7 °F55.1 °F3.88 in.
December27.2 °F44.0 °F2.85 in.
Annual46.3 °F66.1 °F45.01 in.

Climate Data for Lebanon 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 6b : -5°F to 0°F
Plant Hardiness Zone - 2012Zone 6b : -5°F to 0°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationCfa - Humid Subtropical Climate
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