Lake Summerset Illinois Climate Data

Monthly Average Climate Data for Lake Summerset Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January11.7 °F27.9 °F1.57 in.
February15.0 °F32.0 °F1.6 in.
March25.5 °F44.3 °F2.09 in.
April36.3 °F57.9 °F3.69 in.
May48.1 °F69.5 °F4.23 in.
June58.2 °F79.3 °F5.36 in.
July61.7 °F82.4 °F3.99 in.
August59.8 °F80.8 °F3.99 in.
September51.4 °F74.2 °F3.75 in.
October39.9 °F61.3 °F2.93 in.
November28.8 °F46.1 °F2.31 in.
December18.3 °F33.4 °F1.87 in.
Annual37.9 °F57.4 °F37.38 in.

Climate Data for Lake Summerset Illinois

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