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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Sycamore IL

7 Day Forecast

For More Weather Information:

Chicago, IL Local Forecast Office

Today

Rain Chance for Measurable Precipitation 100%

Rain

High: 55 °F

Tonight

Rain Chance for Measurable Precipitation 100%

Rain

Low: 50 °F

Monday

Rain/Snow Chance for Measurable Precipitation 80%

Rain/Snow

High: 42 °FFalling Temperatures

Monday
Night

Chance Snow Chance for Measurable Precipitation 50%

Chance
Snow

Low: 22 °F

Tuesday

Mostly Cloudy

Mostly
Cloudy

High: 26 °F

Tuesday
Night

Mostly Clear

Mostly
Clear

Low: 18 °F

Wednesday

Chance Snow Chance for Measurable Precipitation 50%

Chance
Snow

High: 33 °F

Wednesday
Night

Chance Snow

Chance
Snow

Low: 21 °F

Thanksgiving
Day

Slight Chance Snow

Slight Chc
Snow

High: 26 °F

Detailed Forecast

  • Today Rain, mainly after noon. High near 55. South wind 10 to 15 mph, with gusts as high as 20 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
  • Tonight Rain before midnight, then showers after midnight. Steady temperature around 50. East southeast wind 5 to 10 mph becoming west after midnight. Winds could gust as high as 15 mph. Chance of precipitation is 100%. New precipitation amounts between a half and three quarters of an inch possible.
  • Monday Rain showers before 9am, then rain and snow showers between 9am and noon, then snow likely after noon. Temperature falling to around 27 by 4pm. Breezy, with a west southwest wind 15 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 80%. New snow accumulation of 1 to 3 inches possible.
  • Monday Night A 50 percent chance of snow showers, mainly before midnight. Cloudy, with a low around 22. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph.
  • Tuesday Mostly cloudy, with a high near 26. West wind 10 to 15 mph.
  • Tuesday Night Mostly clear, with a low around 18.
  • Wednesday A 50 percent chance of snow. Mostly cloudy, with a high near 33.
  • Wednesday Night A chance of snow. Cloudy, with a low around 21.
  • Thanksgiving Day A slight chance of snow showers. Partly sunny, with a high near 26.
  • Thursday Night Partly cloudy, with a low around 12.
  • Friday Partly sunny, with a high near 25.
  • Friday Night Mostly cloudy, with a low around 17.
  • Saturday Partly sunny, with a high near 26.