Mount Sterling Illinois Climate Data

Monthly Average Climate Data for Mount Sterling Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January17.3 °F34.3 °F1.92 in.
February21.0 °F39.3 °F1.97 in.
March30.3 °F50.9 °F2.51 in.
April41.1 °F63.0 °F3.98 in.
May52.7 °F72.8 °F5.11 in.
June61.9 °F81.6 °F4.64 in.
July65.4 °F85.2 °F3.67 in.
August63.2 °F83.9 °F3.56 in.
September54.2 °F78.0 °F3.53 in.
October43.0 °F65.6 °F3.24 in.
November32.2 °F51.7 °F2.73 in.
December22.7 °F39.2 °F2.1 in.
Annual42.1 °F62.1 °F38.96 in.

Climate Data for Mount Sterling Illinois

Average First Frost DateOct. 21 - Oct. 31
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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