Essex Illinois Climate Data

Monthly Average Climate Data for Essex Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January16.0 °F31.8 °F2.1 in.
February19.0 °F36.0 °F1.85 in.
March28.5 °F48.1 °F2.41 in.
April38.8 °F61.1 °F3.69 in.
May50.3 °F72.2 °F4.63 in.
June60.2 °F81.6 °F4.61 in.
July63.7 °F84.5 °F4.21 in.
August61.8 °F82.8 °F3.81 in.
September53.7 °F77.6 °F3.29 in.
October42.0 °F64.4 °F3.15 in.
November31.5 °F49.5 °F2.55 in.
December21.7 °F37.0 °F2.09 in.
Annual40.6 °F60.6 °F38.39 in.

Climate Data for Essex 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 ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
2024 plantmaps.com