Troy Illinois Climate Data

Monthly Average Climate Data for Troy Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January23.7 °F39.8 °F2.74 in.
February26.8 °F45.2 °F2.42 in.
March35.7 °F55.6 °F3.47 in.
April46.4 °F67.1 °F4.97 in.
May57.4 °F76.2 °F5.2 in.
June66.2 °F85.0 °F4.8 in.
July70.0 °F88.0 °F4.25 in.
August67.9 °F87.1 °F3.74 in.
September59.6 °F80.7 °F3.26 in.
October48.4 °F69.1 °F3.29 in.
November36.6 °F54.9 °F3.68 in.
December28.3 °F44.2 °F2.77 in.
Annual47.3 °F66.1 °F44.59 in.

Climate Data for Troy 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 7a : 0°F to 5°F
Plant Hardiness Zone - 2012Zone 6a : -10°F to -5°F
Current Drought ConditionsNormal
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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