Weather Forecast for
Decatur, IL

Tonight: Mostly clear, with a low around 69. Northwest wind around 5 mph becoming calm.

Sunday: A 30 percent chance of showers and thunderstorms, mainly between 3pm and 5pm. Mostly sunny, with a high near 89. Heat index values as high as 100. South southwest wind 6 to 11 mph increasing to 12 to 17 mph in the afternoon. Winds could gust as high as 24 mph.

Sunday Night: A 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 74. South wind 13 to 15 mph, with gusts as high as 23 mph.

Monday: Mostly sunny, with a high near 90. Heat index values as high as 103. South southwest wind 10 to 13 mph, with gusts as high as 17 mph.

Monday Night: Partly cloudy, with a low around 74. South southwest wind around 11 mph, with gusts as high as 16 mph.

Tuesday: Mostly sunny, with a high near 89. Southwest wind 10 to 13 mph, with gusts as high as 17 mph.

Tuesday Night: A 50 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 72. South southwest wind around 8 mph.

Wednesday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 86. Chance of precipitation is 50%.

Wednesday Night: A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 68.

Thursday: A chance of showers, with thunderstorms also possible after 1pm. Mostly cloudy, with a high near 82. Chance of precipitation is 50%.

Thursday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 64.

Friday: A chance of showers and thunderstorms. Partly sunny, with a high near 79.

Friday Night: A chance of showers. Mostly cloudy, with a low around 63.

Saturday: A chance of showers and thunderstorms. Partly sunny, with a high near 79.

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