National Weather Service United States Department of Commerce

Heavy rain and mountain snow across the northwestern U.S. this weekend

A Pacific storm system will continue to impact the Pacific Northwest through late Sunday. Heavy rainfall could lead to flash flooding, river and small stream flooding, as well as mudslides and debris flows, especially over burn scars. At higher elevations, strong winds and heavy snowfall, with accumulations of 1 to 3 feet, could result in hazardous travel through mountain passes.
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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: 32 °F

Monday

Rain Likely Chance for Measurable Precipitation 70%

Rain
Likely

High: 45 °F

Monday
Night

Rain Likely Chance for Measurable Precipitation 70%

Rain
Likely

Low: 43 °F

Tuesday

Mostly Cloudy

Mostly
Cloudy

High: 49 °F

Tuesday
Night

Chance Rain/Snow Chance for Measurable Precipitation 40%

Chance
Rain/Snow

Low: 34 °F

Wednesday

Chance Snow Chance for Measurable Precipitation 40%

Chance
Snow

High: 37 °F

Wednesday
Night

Mostly Cloudy

Mostly
Cloudy

Low: 29 °F

Christmas
Day

Mostly Sunny

Mostly
Sunny

High: 41 °F

Thursday
Night

Mostly Cloudy

Mostly
Cloudy

Low: 33 °F

Detailed Forecast

  • Tonight Mostly cloudy, with a low around 32. Southeast wind around 10 mph.
  • Monday Rain likely, mainly after noon. Cloudy, with a high near 45. Southeast wind 10 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 70%.
  • Monday Night Rain likely, mainly before midnight. Cloudy, with a low around 43. South southeast wind 8 to 15 mph, with gusts as high as 21 mph. Chance of precipitation is 70%.
  • Tuesday Mostly cloudy, with a high near 49. South southwest wind 7 to 9 mph.
  • Tuesday Night A chance of rain before midnight, then a chance of rain and snow. Cloudy, with a low around 34. West southwest wind 6 to 8 mph becoming northwest after midnight. Winds could gust as high as 16 mph. Chance of precipitation is 40%.
  • Wednesday A 40 percent chance of snow. Cloudy, with a high near 37.
  • Wednesday Night Mostly cloudy, with a low around 29.
  • Christmas Day Mostly sunny, with a high near 41.
  • Thursday Night Mostly cloudy, with a low around 33.
  • Friday Partly sunny, with a high near 40.
  • Friday Night Mostly cloudy, with a low around 23.
  • Saturday Mostly sunny, with a high near 30.
  • Saturday Night Partly cloudy, with a low around 22.
  • Sunday Mostly sunny, with a high near 32.