Pekin Illinois Climate Data

Monthly Average Climate Data for Pekin Illinois

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January17.2 °F33.7 °F2.12 in.
February20.4 °F38.4 °F2.0 in.
March30.3 °F50.7 °F2.57 in.
April40.8 °F63.5 °F3.86 in.
May52.5 °F74.0 °F4.85 in.
June61.9 °F83.0 °F4.49 in.
July65.2 °F86.1 °F3.96 in.
August62.8 °F84.7 °F3.44 in.
September54.4 °F79.3 °F3.4 in.
October42.4 °F66.3 °F3.14 in.
November31.8 °F51.5 °F2.76 in.
December22.7 °F39.0 °F2.13 in.
Annual41.9 °F62.5 °F38.72 in.

Climate Data for Pekin 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