Mount Pulaski Illinois Climate Data

Monthly Average Climate Data for Mount Pulaski Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January17.9 °F34.5 °F2.18 in.
February21.1 °F39.4 °F2.06 in.
March30.3 °F50.9 °F2.74 in.
April41.3 °F64.0 °F4.05 in.
May52.8 °F74.1 °F4.36 in.
June61.8 °F83.0 °F4.44 in.
July64.8 °F85.9 °F4.2 in.
August63.0 °F84.0 °F3.33 in.
September54.6 °F79.1 °F3.02 in.
October42.9 °F66.3 °F3.29 in.
November32.1 °F51.5 °F2.87 in.
December23.5 °F39.4 °F2.24 in.
Annual42.2 °F62.7 °F38.78 in.

Climate Data for Mount Pulaski 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 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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