Olive Branch Illinois Climate Data

Monthly Average Climate Data for Olive Branch Illinois

Switch Data to Fahrenheit
MonthAvg. LowAvg. HighAvg. Precip
January-3.1 °C6.1 °C94.49 mm
February-1.4 °C9.1 °C95.25 mm
March3 °C14.4 °C120.4 mm
April8.4 °C20.6 °C144.27 mm
May14.2 °C25.4 °C128.27 mm
June18.8 °C30.1 °C112.52 mm
July20.8 °C31.7 °C88.9 mm
August19.4 °C31.1 °C77.47 mm
September14.9 °C27.8 °C86.87 mm
October8.5 °C22 °C101.09 mm
November2.8 °C14.2 °C118.87 mm
December-1.2 °C8.1 °C101.6 mm
Annual8.8 °C20.1 °C1270 mm

Climate Data for Olive Branch 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 7a : -17.8°C to -15°C
Plant Hardiness Zone - 2012Zone 6b : -20.6°C to -17.8°C
Current Drought ConditionsAbnormally Dry
Köppen Climate ClassificationCfa - Humid Subtropical Climate
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