Brooklyn Illinois Climate Data

Monthly Average Climate Data for Brooklyn Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January23.1 °F40.1 °F2.67 in.
February26.8 °F45.5 °F2.4 in.
March35.4 °F55.3 °F3.48 in.
April46.1 °F67.6 °F4.7 in.
May56.7 °F76.7 °F5.26 in.
June65.7 °F85.6 °F4.63 in.
July69.4 °F89.0 °F4.23 in.
August67.6 °F87.7 °F3.94 in.
September59.1 °F81.1 °F3.37 in.
October47.6 °F69.7 °F3.32 in.
November36.6 °F55.7 °F3.57 in.
December27.7 °F44.5 °F2.82 in.
Annual46.8 °F66.5 °F44.39 in.

Climate Data for Brooklyn Illinois

Average First Frost DateNov. 1 - Nov. 10
Average Last Frost DateApr. 1 - Apr. 10
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 ConditionsNormal
Köppen Climate ClassificationCfa - Humid Subtropical Climate
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