Trenton Illinois Climate Data

Monthly Average Climate Data for Trenton Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January22.7 °F39.4 °F2.76 in.
February26.1 °F44.6 °F2.33 in.
March34.8 °F55.0 °F3.3 in.
April45.4 °F66.9 °F4.82 in.
May56.3 °F76.0 °F4.92 in.
June65.1 °F85.0 °F4.75 in.
July68.8 °F88.2 °F3.9 in.
August66.6 °F87.2 °F3.19 in.
September58.2 °F80.8 °F3.23 in.
October46.6 °F69.2 °F3.07 in.
November35.6 °F54.9 °F3.71 in.
December27.2 °F43.8 °F2.75 in.
Annual46.1 °F65.9 °F42.73 in.

Climate Data for Trenton 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 6b : -5°F to 0°F
Plant Hardiness Zone - 2012Zone 6b : -5°F to 0°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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