National Weather Service United States Department of Commerce

Winter weather forecast for Rockies and southern Plains

A developing storm system will bring snow to parts of the Rockies and southern Plains on Friday, which will move into the central U.S. on Saturday. Freezing rain is also forecast from Texas to the mid-Mississippi Valley and into the Carolinas. Meanwhile, temperatures will be 20-40 degrees below normal across parts of the central and southern U.S. on Friday.
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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

Mostly Cloudy

Mostly
Cloudy

Low: 2 °F

Saturday

Partly Sunny

Partly
Sunny

High: 25 °F

Saturday
Night

Snow Chance for Measurable Precipitation 80%

Snow

Low: 21 °F

Sunday

Snow Chance for Measurable Precipitation 80%

Snow

High: 31 °F

Sunday
Night

Chance Snow Chance for Measurable Precipitation 30%

Chance
Snow

Low: 19 °F

Monday

Mostly Cloudy

Mostly
Cloudy

High: 31 °F

Monday
Night

Wintry Mix Chance for Measurable Precipitation 60%

Wintry
Mix

Low: 27 °F

Tuesday

Freezing Rain Likely

Freezing Rain
Likely

High: 46 °F

Tuesday
Night

Chance Rain/Snow

Chance
Rain/Snow

Low: 28 °F

Detailed Forecast

  • Tonight Mostly cloudy, with a low around 2. Wind chill values between -5 and zero. Calm wind becoming east southeast around 5 mph after midnight.
  • Saturday Partly sunny, with a high near 25. Wind chill values between -8 and 2. East southeast wind 6 to 8 mph.
  • Saturday Night Snow. Low around 21. Southeast wind around 8 mph. Chance of precipitation is 80%. New snow accumulation of 3 to 5 inches possible.
  • Sunday Snow. High near 31. South southeast wind 7 to 9 mph becoming west in the afternoon. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
  • Sunday Night A 30 percent chance of snow before midnight. Mostly cloudy, with a low around 19. West wind around 9 mph becoming north after midnight.
  • Monday Mostly cloudy, with a high near 31.
  • Monday Night Freezing rain and sleet likely. Cloudy, with a low around 27. Chance of precipitation is 60%.
  • Tuesday Rain or freezing rain likely. Cloudy, with a high near 46.
  • Tuesday Night A chance of rain and snow. Cloudy, with a low around 28.
  • Wednesday A chance of snow. Mostly cloudy, with a high near 32.
  • Wednesday Night Mostly cloudy, with a low around 9.
  • Thursday Mostly sunny, with a high near 24.
  • Thursday Night Mostly clear, with a low around 12.
  • Friday Sunny, with a high near 38.