Tremont Illinois Climate Data

Monthly Average Climate Data for Tremont Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January16.4 °F33.1 °F2.21 in.
February19.8 °F38.0 °F1.98 in.
March29.4 °F50.1 °F2.6 in.
April40.2 °F63.1 °F3.87 in.
May51.8 °F73.7 °F4.76 in.
June61.4 °F82.5 °F4.3 in.
July64.6 °F85.6 °F4.08 in.
August62.4 °F84.1 °F3.43 in.
September54.3 °F79.0 °F3.29 in.
October42.5 °F65.9 °F3.18 in.
November31.4 °F51.0 °F2.89 in.
December22.1 °F38.4 °F2.17 in.
Annual41.4 °F62 °F38.76 in.

Climate Data for Tremont Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateApr. 21 - Apr. 30
Average Days With Frost100-125 Days
Plant Hardiness Zone - 2023Zone 6a : -10°F to -5°F
Plant Hardiness Zone - 2012Zone 5b : -15°F to -10°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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