Be prepared with the most accurate 10-day forecast for Decatur, Illinois with highs, lows, chance of precipitation from The Weather Channel and Weather.com ...

...COLD WEATHER ADVISORY REMAINS IN EFFECT UNTIL NOON CST TUESDAY... WHAT...Very cold wind chills as low as 22 below expected. WHERE...Portions of central, east ...

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Light rain is expected during the day. The high will be 22° on this breezy day. Pressure is the weight of the air in the atmosphere. It is normalized to the standard atmospheric pressure of 1,013.25 ...