National Weather Service United States Department of Commerce

Unseasonably cold temperatures spreading into central U.S.

A strong cold front will usher a much colder air mass into the central and eastern U.S. for the end of the work week. Temperatures will be 10 to 20 degrees below average in some areas. Rain and snow will be possible across the Great Lakes on Friday as the system crosses the area. Heavy snow is possible in the central Appalachians Friday night.
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Current Conditions

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Decatur IL

7 Day Forecast

For More Weather Information:

Lincoln, IL Local Forecast Office

Overnight

Chance Showers Chance for Measurable Precipitation 30%

Chance
Showers

Low: 37 °F

Friday

Chance Showers Chance for Measurable Precipitation 30%

Chance
Showers

High: 44 °F

Friday
Night

Frost

Frost

Low: 28 °F

Saturday

Morning Frost

Morning
Frost

High: 45 °F

Saturday
Night

Mostly Clear

Mostly
Clear

Low: 28 °F

Sunday

Mostly Sunny

Mostly
Sunny

High: 49 °F

Sunday
Night

Partly Cloudy

Partly
Cloudy

Low: 38 °F

Monday

Partly Sunny

Partly
Sunny

High: 58 °F

Monday
Night

Showers Likely

Showers
Likely

Low: 47 °F

Detailed Forecast

  • Overnight A 30 percent chance of showers, mainly after 5am. Mostly cloudy, with a low around 37. Northwest wind 3 to 8 mph.
  • Friday A 30 percent chance of showers, mainly before 7am. Partly sunny, with a high near 44. Breezy, with a north northwest wind 16 to 24 mph, with gusts as high as 39 mph.
  • Friday Night Widespread frost after 1am. Otherwise, mostly clear, with a low around 28. North northwest wind 13 to 17 mph, with gusts as high as 31 mph.
  • Saturday Widespread frost before 10am. Otherwise, sunny, with a high near 45. North northwest wind 8 to 11 mph.
  • Saturday Night Mostly clear, with a low around 28. North northeast wind 5 to 7 mph becoming light and variable.
  • Sunday Mostly sunny, with a high near 49.
  • Sunday Night Partly cloudy, with a low around 38.
  • Monday Partly sunny, with a high near 58.
  • Monday Night Showers likely. Cloudy, with a low around 47.
  • Tuesday Showers likely. Cloudy, with a high near 56.
  • Tuesday Night Showers likely. Mostly cloudy, with a low around 42.
  • Wednesday A chance of showers. Mostly sunny, with a high near 56.
  • Wednesday Night Partly cloudy, with a low around 41.
  • Thursday Mostly sunny, with a high near 57.