Rockport Illinois Climate Data

Monthly Average Climate Data for Rockport Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January19.3 °F36.3 °F2.01 in.
February22.7 °F41.4 °F1.87 in.
March32.0 °F52.5 °F2.75 in.
April42.7 °F65.0 °F4.0 in.
May53.7 °F74.6 °F4.68 in.
June63.0 °F83.4 °F4.58 in.
July66.6 °F87.0 °F3.9 in.
August64.5 °F85.9 °F3.38 in.
September55.9 °F79.6 °F3.53 in.
October44.6 °F67.2 °F2.9 in.
November33.8 °F53.2 °F2.81 in.
December24.4 °F40.9 °F2.15 in.
Annual43.6 °F63.9 °F38.56 in.

Climate Data for Rockport Illinois

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateApr. 11 - Apr. 20
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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