Holcomb Illinois Climate Data

Monthly Average Climate Data for Holcomb Illinois

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-10.8 °C-1.9 °C42.16 mm
February-8.9 °C0.4 °C42.67 mm
March-3.2 °C7.3 °C56.39 mm
April2.7 °C15 °C92.71 mm
May9.2 °C21.3 °C117.86 mm
June14.7 °C26.4 °C132.59 mm
July16.7 °C28.1 °C103.63 mm
August15.6 °C27.2 °C102.62 mm
September10.9 °C23.9 °C87.88 mm
October4.4 °C16.7 °C72.39 mm
November-1.6 °C8.3 °C58.42 mm
December-7.4 °C1.2 °C48.51 mm
Annual3.5 °C14.5 °C957.83 mm

Climate Data for Holcomb Illinois

Average First Frost DateOct. 11 - Oct. 20
Average Last Frost DateMay 11 - May 20
Average Days With Frost125-150 Days
Plant Hardiness Zone - 2023Zone 5b : -26.1°C to -23.3°C
Plant Hardiness Zone - 2012Zone 5a : -28.9°C to -26.1°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
2024 plantmaps.com