Middletown Illinois Climate Data

Monthly Average Climate Data for Middletown Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January17.8 °F34.5 °F2.12 in.
February21.1 °F39.4 °F1.87 in.
March30.5 °F51.2 °F2.57 in.
April41.3 °F64.4 °F3.9 in.
May52.9 °F74.4 °F4.5 in.
June62.1 °F83.1 °F4.52 in.
July65.1 °F85.9 °F4.09 in.
August63.0 °F84.5 °F3.51 in.
September54.7 °F79.4 °F3.26 in.
October43.0 °F66.8 °F3.13 in.
November32.2 °F51.8 °F2.85 in.
December23.3 °F39.6 °F2.21 in.
Annual42.3 °F62.9 °F38.53 in.

Climate Data for Middletown Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 1 - May 10
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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