Banner Illinois Climate Data

Monthly Average Climate Data for Banner Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January16.9 °F33.8 °F1.88 in.
February20.4 °F38.5 °F1.96 in.
March30.3 °F50.9 °F2.53 in.
April41.0 °F64.0 °F3.99 in.
May52.7 °F74.5 °F5.18 in.
June62.0 °F83.4 °F4.7 in.
July65.0 °F86.5 °F4.08 in.
August62.7 °F85.0 °F3.51 in.
September54.2 °F79.6 °F3.57 in.
October42.3 °F66.8 °F3.06 in.
November31.9 °F51.5 °F2.82 in.
December22.7 °F39.0 °F2.22 in.
Annual41.8 °F62.8 °F39.5 in.

Climate Data for Banner Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateApr. 21 - Apr. 30
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 6a : -10°F to -5°F
Plant Hardiness Zone - 2012Zone 5b : -15°F to -10°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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