Ullin Illinois Climate Data

Monthly Average Climate Data for Ullin Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January26.3 °F43.0 °F3.74 in.
February29.4 °F48.2 °F3.57 in.
March37.3 °F57.7 °F4.71 in.
April47.2 °F68.6 °F5.38 in.
May57.5 °F77.4 °F5.29 in.
June65.9 °F85.8 °F4.44 in.
July69.3 °F88.8 °F3.86 in.
August66.9 °F87.5 °F2.92 in.
September58.9 °F81.9 °F3.41 in.
October47.2 °F71.3 °F3.87 in.
November37.0 °F57.6 °F4.42 in.
December30.0 °F46.6 °F4.15 in.
Annual47.7 °F67.9 °F49.76 in.

Climate Data for Ullin 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 7a : 0°F to 5°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationCfa - Humid Subtropical Climate
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