Decatur Airport weather averages, Illinois

Decatur Airport weather averages include temperature, rainfall & sunshine figures for every month of the year. Check the weather at Decatur Airport (DEC), Illinois, USA before you book your next flight.

Maximum temperature (°C) at Decatur Airport

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Monthly rainfall (mm) at Decatur Airport

Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Hours of sunshine at Decatur Airport

Jan
Feb
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May
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Nov
Dec

Metric (°C / mm)  |  Imperial (°F / inches)

The Illinois weather averages are provided by Weather2Travel.com. For more weather guides on Illinois, USA visit the Illinois weather averages section.

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