Heavy Rain and Mountain Snow Lingers in California; Winter Storm Impacting the Great Lakes and Northeast U.S.

An atmospheric river will wind down through today across California with lingering heavy rainfall, heavy mountain snow, and gusty winds. A wintry mix of freezing rain, sleet, and snow will cause hazardous travel conditions for the Great Lakes into the northern Mid-Atlantic and southern New England today through Saturday morning. Areas of tree damage and power outages are possible. Read More >

Current conditions at

Clinton Municipal Airport (KCWI)

Lat: 41.83°NLon: 90.33°WElev: 696ft.

Fog/Mist

36°F

2°C

Humidity 100%
Wind Speed SE 8 mph
Barometer 29.97 in (1015.7 mb)
Dewpoint 36°F (2°C)
Visibility 2.50 mi
Wind Chill30°F (-1°C)
Last update 27 Dec 3:56 am CST
Extended Forecast for

Savanna IL

Dense Fog Advisory December 27, 04:57am until December 27, 12:00pm
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory December 27, 04:57am until December 27, 12:00pm

    NOW until 12:00pm Sat

    Dense Fog Advisory

  • Today

    High: 46 °F

    Dense Fog

  • Tonight

    Tonight: A 30 percent chance of rain, mainly after 4am.  Areas of fog.  Otherwise, mostly cloudy, with a low around 42. Southeast wind around 5 mph becoming calm  after midnight.

    Low: 42 °F

    Chance Rain
    and Areas Fog

  • Sunday

    Sunday: Rain.  Temperature rising to near 51 by noon, then falling to around 39 during the remainder of the day. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph.  Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 51 °F

    Rain

  • Sunday Night

    Sunday Night: A chance of rain, snow, and sleet before 9pm, then a chance of snow.  Mostly cloudy, with a low around 13. Wind chill values as low as -5. Breezy, with a west wind 20 to 25 mph, with gusts as high as 40 mph.  Chance of precipitation is 50%. New snow and sleet accumulation of less than a half inch possible.

    Low: 13 °F

    Breezy.
    Chance Wintry
    Mix then
    Chance Snow

  • Monday

    Monday: Mostly cloudy, with a high near 20. Breezy.

    High: 20 °F

    Mostly Cloudy
    and Breezy

  • Monday Night

    Monday Night: Mostly clear, with a low around 8.

    Low: 8 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 28.

    High: 28 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 19.

    Low: 19 °F

    Mostly Cloudy

Detailed Forecast

Today
Widespread dense fog, mainly before 11am. Otherwise, cloudy, with a high near 46. Light southeast wind increasing to 5 to 10 mph in the morning.
Tonight
A 30 percent chance of rain, mainly after 4am. Areas of fog. Otherwise, mostly cloudy, with a low around 42. Southeast wind around 5 mph becoming calm after midnight.
Sunday
Rain. Temperature rising to near 51 by noon, then falling to around 39 during the remainder of the day. Light and variable wind becoming west 10 to 15 mph in the afternoon. Winds could gust as high as 25 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Sunday Night
A chance of rain, snow, and sleet before 9pm, then a chance of snow. Mostly cloudy, with a low around 13. Wind chill values as low as -5. Breezy, with a west wind 20 to 25 mph, with gusts as high as 40 mph. Chance of precipitation is 50%. New snow and sleet accumulation of less than a half inch possible.
Monday
Mostly cloudy, with a high near 20. Breezy.
Monday Night
Mostly clear, with a low around 8.
Tuesday
Mostly sunny, with a high near 28.
Tuesday Night
Mostly cloudy, with a low around 19.
Wednesday
Mostly cloudy, with a high near 30.
Wednesday Night
Mostly cloudy, with a low around 7.
New Year's Day
Sunny, with a high near 16.
Thursday Night
Mostly clear, with a low around 2.
Friday
Mostly sunny, with a high near 20.
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ABOUT THIS FORECAST

 
Point Forecast:
Savanna IL
 42.09°N 90.13°W (Elev. 623 ft)
3:56 am CST Dec 27, 2025
4am CST Dec 27, 2025-6pm CST Jan 2, 2026
 
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Additional Resources

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