Bunker Hill Illinois Climate Data

Monthly Average Climate Data for Bunker Hill Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January21.8 °F37.6 °F2.54 in.
February25.2 °F43.0 °F2.25 in.
March34.1 °F53.5 °F3.22 in.
April44.8 °F65.2 °F4.73 in.
May55.7 °F74.7 °F5.07 in.
June64.7 °F83.4 °F4.32 in.
July68.1 °F86.3 °F3.91 in.
August66.1 °F85.5 °F3.58 in.
September57.6 °F79.6 °F3.28 in.
October46.2 °F67.7 °F3.26 in.
November35.4 °F53.6 °F3.45 in.
December26.6 °F42.3 °F2.61 in.
Annual45.5 °F64.4 °F42.22 in.

Climate Data for Bunker Hill 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 6b : -5°F to 0°F
Plant Hardiness Zone - 2012Zone 6a : -10°F to -5°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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