Merrionette Park Illinois Climate Data

Monthly Average Climate Data for Merrionette Park Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January17.9 °F32.2 °F2.17 in.
February20.6 °F35.9 °F2.08 in.
March29.9 °F46.7 °F2.38 in.
April40.2 °F59.3 °F3.92 in.
May51.1 °F70.3 °F4.62 in.
June61.2 °F80.2 °F4.32 in.
July66.4 °F84.6 °F4.39 in.
August64.6 °F82.7 °F4.17 in.
September57.3 °F76.4 °F3.24 in.
October44.9 °F63.5 °F3.49 in.
November33.9 °F49.4 °F2.63 in.
December23.6 °F37.4 °F2.32 in.
Annual42.6 °F59.9 °F39.73 in.

Climate Data for Merrionette Park Illinois

Average First Frost DateOct. 21 - Oct. 31
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 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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