Tracking Late December Winter Storm Expected to Impact the Northern Plains through the Northeast U.S.

A winter storm system will rapidly intensify over the Midwest on Sunday and track through the Great Lakes on Monday. Periods of heavy snow are anticipated across the Upper Great Lakes late Sunday and continuing into Monday. At least 1/10 inch of ice accumulation is expected from a wintry mix across much of the interior Northeast U.S. starting Sunday afternoon. Read More >

Current conditions at

Monticello Regional Airport (KMXO)

Lat: 42.22°NLon: 91.16°WElev: 827ft.

Unknown Precip Fog

37°F

3°C

Humidity 100%
Wind Speed SE 13 mph
Barometer 29.89 in
Dewpoint 37°F (3°C)
Visibility 0.25 mi
Wind Chill29°F (-2°C)
Last update 27 Dec 10:15 am CST
Extended Forecast for

Ryan IA

Dense Fog Advisory December 27, 10:38am until December 27, 12:00pm
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory December 27, 10:38am until December 27, 12:00pm

    NOW until 12:00pm Sat

    Dense Fog Advisory

  • Today

    High: 43 °F

    Dense Fog

  • Tonight

    Tonight: A 20 percent chance of rain after 9pm.  Areas of fog.  Otherwise, cloudy, with a low around 40. Southeast wind 5 to 10 mph.

    Low: 40 °F

    Slight Chance
    Rain and
    Areas Fog

  • Sunday

    Sunday: Rain before 1pm, then rain, possibly mixed with sleet between 1pm and 3pm, then snow, possibly mixed with rain and sleet after 3pm.  Temperature rising to near 45 by 9am, then falling to around 27 during the remainder of the day. Breezy, with a southeast wind 5 to 10 mph becoming northwest 15 to 25 mph in the morning. Winds could gust as high as 40 mph.  Chance of precipitation is 90%. New snow and sleet accumulation of less than a half inch possible.

    High: 45 °F

    Rain then
    Wintry Mix
    and Breezy

  • Sunday Night

    Sunday Night: Snow likely, mainly before midnight.  Cloudy, with a low around 9. Wind chill values as low as -10. Windy, with a northwest wind 25 to 30 mph, with gusts as high as 45 mph.  Chance of precipitation is 60%. New snow accumulation of around an inch possible.

    Low: 9 °F

    Snow Likely
    and Windy

  • Monday

    Monday: Partly sunny, with a high near 15. Blustery.

    High: 15 °F

    Partly Sunny
    and Blustery

  • Monday Night

    Monday Night: Mostly clear, with a low around 6. Blustery.

    Low: 6 °F

    Mostly Clear
    and Blustery
    then 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 18.

    Low: 18 °F

    Mostly Cloudy

Detailed Forecast

Today
Widespread dense fog, mainly before 11am. Otherwise, cloudy, with a high near 43. Southeast wind around 10 mph, with gusts as high as 20 mph.
Tonight
A 20 percent chance of rain after 9pm. Areas of fog. Otherwise, cloudy, with a low around 40. Southeast wind 5 to 10 mph.
Sunday
Rain before 1pm, then rain, possibly mixed with sleet between 1pm and 3pm, then snow, possibly mixed with rain and sleet after 3pm. Temperature rising to near 45 by 9am, then falling to around 27 during the remainder of the day. Breezy, with a southeast wind 5 to 10 mph becoming northwest 15 to 25 mph in the morning. Winds could gust as high as 40 mph. Chance of precipitation is 90%. New snow and sleet accumulation of less than a half inch possible.
Sunday Night
Snow likely, mainly before midnight. Cloudy, with a low around 9. Wind chill values as low as -10. Windy, with a northwest wind 25 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.
Monday
Partly sunny, with a high near 15. Blustery.
Monday Night
Mostly clear, with a low around 6. Blustery.
Tuesday
Mostly sunny, with a high near 28.
Tuesday Night
Mostly cloudy, with a low around 18.
Wednesday
Partly sunny, with a high near 28.
Wednesday Night
Mostly cloudy, with a low around 4.
New Year's Day
Sunny, with a high near 12.
Thursday Night
Mostly clear, with a low around -1.
Friday
Mostly sunny, with a high near 17.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

 
Point Forecast:
Ryan IA
 42.36°N 91.47°W (Elev. 984 ft)
8:56 am CST Dec 27, 2025
10am CST Dec 27, 2025-6pm CST Jan 2, 2026
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database