National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Late January Extreme Cold; Watching for Another East Coast Storm Threat This Weekend

Well below normal temperatures will continue for the eastern half of the Lower 48 this week. Another blast of arctic air will spread from the Plains through the East/Southeast Friday into Saturday with more record lows expected even into Florida. Forecasts are being monitored for increasing potential of another significant winter storm to impact the eastern United States this coming weekend. Read More >

Current conditions at

Illinois Valley Regional Airport (KVYS)

Lat: 41.35°NLon: 89.15°WElev: 650ft.

Partly Cloudy

16°F

-9°C

Humidity 53%
Wind Speed NW 20 G 29 mph
Barometer 30.21 in
Dewpoint 1°F (-17°C)
Visibility 10.00 mi
Wind Chill-1°F (-18°C)
Last update 27 Jan 1:21 pm CST
Extended Forecast for

Mark IL

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 15. Wind chill values as low as -5. Blustery, with a northwest wind 10 to 20 mph, with gusts as high as 35 mph.

    High: 15 °F

    Mostly Sunny
    and Blustery

  • Tonight

    Tonight: Mostly clear, with a low around 2. Wind chill values as low as -10. West wind 5 to 10 mph.

    Low: 2 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 19. Wind chill values as low as -10. West wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 19 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 0. Wind chill values as low as -10. Northwest wind 5 to 10 mph.

    Low: 0 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 14.

    High: 14 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 0.

    Low: 0 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 14.

    High: 14 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 4.

    Low: 4 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 22.

    High: 22 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 15. Wind chill values as low as -5. Blustery, with a northwest wind 10 to 20 mph, with gusts as high as 35 mph.
Tonight
Mostly clear, with a low around 2. Wind chill values as low as -10. West wind 5 to 10 mph.
Wednesday
Mostly sunny, with a high near 19. Wind chill values as low as -10. West wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday Night
Mostly clear, with a low around 0. Wind chill values as low as -10. Northwest wind 5 to 10 mph.
Thursday
Mostly sunny, with a high near 14.
Thursday Night
Mostly clear, with a low around 0.
Friday
Mostly sunny, with a high near 14.
Friday Night
Partly cloudy, with a low around 4.
Saturday
Sunny, with a high near 22.
Saturday Night
Mostly clear, with a low around 6.
Sunday
Mostly sunny, with a high near 26.
Sunday Night
Mostly cloudy, with a low around 12.
Monday
Partly sunny, with a high near 29.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Mark IL
 41.26°N 89.26°W (Elev. 699 ft)
Last Update:
9:55 am CST Jan 27, 2026
Forecast Valid:
1pm CST Jan 27, 2026-6pm CST Feb 2, 2026
 
Forecast Discussion
 
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Additional Resources

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Chance of Precipitation