Milton Illinois Climate Data

Monthly Average Climate Data for Milton Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January18.6 °F35.5 °F2.09 in.
February22.0 °F40.7 °F1.98 in.
March31.2 °F51.9 °F2.82 in.
April41.8 °F64.4 °F4.13 in.
May53.1 °F74.0 °F4.73 in.
June62.5 °F82.7 °F4.79 in.
July65.7 °F86.1 °F4.11 in.
August63.5 °F85.2 °F3.42 in.
September54.8 °F79.2 °F3.48 in.
October43.4 °F66.7 °F2.96 in.
November33.0 °F52.6 °F2.94 in.
December23.7 °F40.4 °F2.19 in.
Annual42.8 °F63.3 °F39.64 in.

Climate Data for Milton 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 6a : -10°F to -5°F
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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