Decatur, IL

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Weather Forecast for Decatur

This Afternoon

Showers and thunderstorms likely, mainly before 4pm. Some of the storms could produce heavy rain. Cloudy, with a high near 76. Southwest wind around 11 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Tonight

Showers and thunderstorms likely, mainly before 4am, then showers likely and possibly a thunderstorm after 4am. Some of the storms could produce heavy rain. Mostly cloudy, with a low around 67. Southwest wind 6 to 8 mph. Chance of precipitation is 60%. New rainfall amounts between three quarters and one inch possible.

Sunday

A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 83. Southwest wind around 6 mph.

Sunday Night

Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 66. West southwest wind around 5 mph becoming east southeast after midnight. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Monday

A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a high near 81. North wind around 6 mph.

Monday Night

A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 64. Northeast wind around 7 mph.

Tuesday

A 30 percent chance of showers. Partly sunny, with a high near 81. North northeast wind 5 to 8 mph.

Tuesday Night

A chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 64.

Wednesday

Showers and thunderstorms likely, mainly after 1pm. Mostly cloudy, with a high near 78.

Wednesday Night

Showers and thunderstorms likely, mainly before 1am. Mostly cloudy, with a low around 65.

Thursday

A chance of showers and thunderstorms. Partly sunny, with a high near 80.

Thursday Night

Partly cloudy, with a low around 64.

Friday

A chance of showers and thunderstorms. Partly sunny, with a high near 83.