Rockton Illinois Climate Data

Monthly Average Climate Data for Rockton Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January12.5 °F28.3 °F1.62 in.
February15.6 °F32.5 °F1.56 in.
March26.0 °F44.7 °F2.1 in.
April36.8 °F57.8 °F3.64 in.
May48.2 °F69.4 °F4.32 in.
June58.3 °F79.4 °F5.47 in.
July62.1 °F82.9 °F3.72 in.
August60.4 °F81.3 °F4.14 in.
September51.9 °F74.7 °F3.76 in.
October40.4 °F61.7 °F2.9 in.
November29.2 °F46.4 °F2.36 in.
December19.1 °F33.9 °F1.92 in.
Annual38.4 °F57.8 °F37.51 in.

Climate Data for Rockton Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 1 - May 10
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 5b : -15°F to -10°F
Plant Hardiness Zone - 2012Zone 5b : -15°F to -10°F
Current Drought ConditionsSevere Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
2024 plantmaps.com