Summerfield Illinois Climate Data

Monthly Average Climate Data for Summerfield Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January22.6 °F39.5 °F2.89 in.
February26.0 °F44.7 °F2.43 in.
March34.8 °F55.1 °F3.47 in.
April45.5 °F67.0 °F5.09 in.
May56.4 °F76.1 °F5.18 in.
June65.2 °F85.0 °F4.91 in.
July68.9 °F88.3 °F3.94 in.
August66.8 °F87.2 °F3.28 in.
September58.4 °F80.8 °F3.35 in.
October46.8 °F69.3 °F3.14 in.
November35.7 °F55.0 °F3.85 in.
December27.1 °F43.9 °F2.82 in.
Annual46.2 °F66 °F44.35 in.

Climate Data for Summerfield 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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