Gillespie Illinois Climate Data

Monthly Average Climate Data for Gillespie Illinois

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-6.4 °C2.3 °C63.75 mm
February-4.6 °C5.3 °C56.39 mm
March0.4 °C11.4 °C78.49 mm
April6.2 °C18.1 °C120.4 mm
May12.4 °C23.5 °C126.75 mm
June17.4 °C28.4 °C109.98 mm
July19.1 °C30 °C100.08 mm
August17.9 °C29.6 °C87.38 mm
September13.2 °C26.4 °C84.58 mm
October6.9 °C19.7 °C82.55 mm
November1.3 °C11.6 °C88.14 mm
December-3.7 °C5.1 °C65.02 mm
Annual6.7 °C17.6 °C1063.51 mm

Climate Data for Gillespie Illinois

Average First Frost DateOct. 21 - Oct. 31
Average Last Frost DateApr. 21 - Apr. 30
Average Days With Frost75-100 Days
Plant Hardiness Zone - 2023Zone 6b : -20.6°C to -17.8°C
Plant Hardiness Zone - 2012Zone 6a : -23.3°C to -20.6°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationDfa - Humid Continental Hot Summers With Year Around Precipitation
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