Thebes Illinois Climate Data

Monthly Average Climate Data for Thebes Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January25.8 °F42.7 °F3.58 in.
February28.9 °F48.0 °F3.59 in.
March37.0 °F57.7 °F4.65 in.
April46.9 °F68.9 °F5.54 in.
May57.3 °F77.8 °F5.46 in.
June65.7 °F86.3 °F4.22 in.
July69.2 °F89.2 °F3.77 in.
August66.7 °F88.2 °F3.08 in.
September58.7 °F82.2 °F3.36 in.
October46.9 °F71.4 °F3.84 in.
November36.8 °F57.4 °F4.68 in.
December29.5 °F46.2 °F3.87 in.
Annual47.5 °F68 °F49.64 in.

Climate Data for Thebes 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 : 0°F to 5°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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