7-Day Forecast 39.86°N 88.94°W (Text-Only)
NWS Forecast for: Decatur IL
Issued by: National Weather Service Lincoln, IL
Last Update: 4:41 pm CDT May 20, 2024




This Afternoon: A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 86. South southwest wind around 14 mph, with gusts as high as 22 mph.

Tonight: A 20 percent chance of showers and thunderstorms before 10pm. Partly cloudy, with a low around 67. South wind 7 to 10 mph, with gusts as high as 17 mph.

Tuesday: Sunny, with a high near 89. Breezy, with a south wind 9 to 14 mph increasing to 18 to 23 mph in the afternoon. Winds could gust as high as 36 mph.

Tuesday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 65. Breezy, with a southwest wind 17 to 22 mph decreasing to 11 to 16 mph after midnight. Winds could gust as high as 34 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Wednesday: Showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 77. West southwest wind around 11 mph, with gusts as high as 18 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Wednesday Night: A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 58. West northwest wind 6 to 10 mph becoming north northeast after midnight. Winds could gust as high as 15 mph.

Thursday: Mostly sunny, with a high near 78. North northeast wind around 7 mph becoming west northwest in the afternoon.

Thursday Night: A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 61.

Friday: Showers likely and possibly a thunderstorm. Partly sunny, with a high near 81. Chance of precipitation is 60%.

Friday Night: A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 64.

Saturday: A chance of showers and thunderstorms. Partly sunny, with a high near 82.

Saturday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 63.

Sunday: A chance of showers. Partly sunny, with a high near 81.

Sunday Night: Showers and thunderstorms likely. Mostly cloudy, with a low around 65.

Memorial Day: A chance of showers and thunderstorms. Partly sunny, with a high near 81.



Decatur IL
 39.86°N 88.94°W (Elev. 682 ft)

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