Smithton Illinois Climate Data

Monthly Average Climate Data for Smithton Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January23.4 °F40.3 °F2.76 in.
February26.9 °F45.6 °F2.45 in.
March35.5 °F55.7 °F3.55 in.
April46.2 °F67.7 °F4.99 in.
May56.9 °F76.6 °F5.13 in.
June65.8 °F85.5 °F4.86 in.
July69.4 °F88.8 °F4.19 in.
August67.5 °F87.6 °F3.54 in.
September59.1 °F81.1 °F3.3 in.
October47.6 °F69.7 °F3.16 in.
November36.5 °F55.6 °F3.74 in.
December27.9 °F44.6 °F2.93 in.
Annual46.9 °F66.6 °F44.6 in.

Climate Data for Smithton 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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