Galesburg Illinois Climate Data

Monthly Average Climate Data for Galesburg Illinois

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-9.8 °C-0.6 °C44.7 mm
February-7.9 °C1.9 °C49.28 mm
March-2.1 °C9.2 °C62.23 mm
April3.8 °C16.4 °C98.04 mm
May10.6 °C22.4 °C132.08 mm
June16 °C27.3 °C120.14 mm
July17.8 °C29 °C102.11 mm
August16.6 °C28.1 °C94.23 mm
September12 °C24.8 °C98.81 mm
October5.4 °C17.8 °C73.41 mm
November-0.9 °C9.4 °C63.25 mm
December-6.4 °C2.4 °C51.56 mm
Annual4.6 °C15.7 °C989.84 mm

Climate Data for Galesburg Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 1 - May 10
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 5b : -26.1°C to -23.3°C
Plant Hardiness Zone - 2012Zone 5b : -26.1°C to -23.3°C
Current Drought ConditionsModerate Drought
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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