Rockwood Illinois Climate Data

Monthly Average Climate Data for Rockwood Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January23.7 °F41.3 °F2.87 in.
February27.5 °F46.6 °F2.73 in.
March35.1 °F56.5 °F3.83 in.
April45.1 °F67.8 °F5.06 in.
May55.7 °F76.9 °F5.32 in.
June64.7 °F85.5 °F4.4 in.
July68.2 °F88.4 °F3.92 in.
August65.8 °F87.8 °F3.07 in.
September56.9 °F81.4 °F3.21 in.
October45.2 °F70.4 °F3.3 in.
November35.6 °F56.4 °F4.02 in.
December27.3 °F44.9 °F3.16 in.
Annual45.9 °F67 °F44.89 in.

Climate Data for Rockwood 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 6b : -5°F to 0°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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