Decatur, IL

Current conditions, hourly and 7-day forecast, and live radar for Decatur, IL 62523. Right now: mostly cloudy then slight chance showers and thunderstorms, 70°F. Data from the National Weather Service.

• Tonight: A slight chance of showers and thunderstorms between 1am and 4am, then a chance of showers and thunderstorms. Mostly cloudy, with a low around 70. West northwest wind 2 to 8 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch possible.
• Thursday: Showers and thunderstorms likely before 4pm, then a slight chance of showers and thunderstorms. Mostly cloudy, with a high near 80. North northwest wind 2 to 6 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
• Thursday Night: Mostly cloudy, with a low around 60. Northeast wind around 6 mph. New rainfall amounts less than a tenth of an inch possible.
• Friday: Mostly sunny, with a high near 82. East southeast wind around 6 mph.
• Friday Night: Partly cloudy, with a low around 64. South southeast wind around 5 mph.
• Saturday: A slight chance of rain showers between 7am and 1pm. Mostly sunny, with a high near 88. Southwest wind around 7 mph.