Junction Illinois Climate Data

Monthly Average Climate Data for Junction Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January25.3 °F41.4 °F3.6 in.
February27.9 °F46.4 °F3.25 in.
March36.0 °F56.1 °F4.6 in.
April45.9 °F67.8 °F4.79 in.
May56.6 °F76.9 °F5.08 in.
June65.0 °F85.2 °F4.22 in.
July68.1 °F88.1 °F4.14 in.
August65.9 °F87.1 °F3.01 in.
September58.5 °F82.0 °F3.06 in.
October46.8 °F70.3 °F3.27 in.
November36.3 °F56.5 °F4.01 in.
December28.7 °F45.8 °F3.86 in.
Annual46.8 °F67 °F46.89 in.

Climate Data for Junction Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateApr. 21 - Apr. 30
Average Days With Frost75-100 Days
Plant Hardiness Zone - 2023Zone 7a : 0°F to 5°F
Plant Hardiness Zone - 2012Zone 6b : -5°F to 0°F
Current Drought ConditionsNormal
Köppen Climate ClassificationCfa - Humid Subtropical Climate
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