National Weather Service United States Department of Commerce

Developing storm will spread rain across eastern U.S.; thunderstorms in the Southeast

A storm system developing in the South will move up the Mississippi River Valley on Sunday bringing rainfall to much of the eastern U.S., along with thunderstorms in the southeastern states. Some of the thunderstorms in the Southeast could produce large hail, damaging wind and heavy rain.
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Current Conditions

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Decatur IL

7 Day Forecast

For More Weather Information:

Lincoln, IL Local Forecast Office

Tonight

Chance Showers Chance for Measurable Precipitation 50%

Chance
Showers

Low: 47 °F

Sunday

Rain Chance for Measurable Precipitation 100%

Rain

High: 55 °F

Sunday
Night

Rain Chance for Measurable Precipitation 100%

Rain

Low: 36 °F

Monday

Chance Snow Chance for Measurable Precipitation 30%

Chance
Snow

High: 38 °F

Monday
Night

Mostly Cloudy

Mostly
Cloudy

Low: 23 °F

Tuesday

Mostly Sunny

Mostly
Sunny

High: 31 °F

Tuesday
Night

Partly Cloudy

Partly
Cloudy

Low: 22 °F

Wednesday

Partly Sunny

Partly
Sunny

High: 38 °F

Wednesday
Night

Mostly Cloudy

Mostly
Cloudy

Low: 25 °F

Detailed Forecast

  • Tonight A 50 percent chance of showers. Cloudy, with a low around 47. Breezy, with a south wind 15 to 21 mph.
  • Sunday Rain, mainly after noon. High near 55. South southeast wind 11 to 16 mph, with gusts as high as 22 mph. Chance of precipitation is 100%.
  • Sunday Night Rain. Low around 36. Southeast wind 10 to 18 mph becoming west southwest after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 100%.
  • Monday A 30 percent chance of snow before noon. Mostly cloudy, with a high near 38. Breezy, with a west wind 18 to 23 mph, with gusts as high as 32 mph.
  • Monday Night Mostly cloudy, with a low around 23. West wind 14 to 17 mph, with gusts as high as 21 mph.
  • Tuesday Mostly sunny, with a high near 31.
  • Tuesday Night Partly cloudy, with a low around 22.
  • Wednesday Partly sunny, with a high near 38.
  • Wednesday Night Mostly cloudy, with a low around 25.
  • Thanksgiving Day Partly sunny, with a high near 36.
  • Thursday Night Mostly cloudy, with a low around 19.
  • Friday Mostly sunny, with a high near 29.
  • Friday Night Partly cloudy, with a low around 19.
  • Saturday Mostly sunny, with a high near 31.