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

36°F

2°C

Humidity 100%
Wind Speed SE 9 G 16 mph
Barometer 29.92 in
Dewpoint 36°F (2°C)
Visibility 0.25 mi
Wind Chill29°F (-2°C)
Last update 27 Dec 8:15 am CST
Extended Forecast for

Olin IA

Dense Fog Advisory December 27, 08:37am until December 27, 12:00pm
Click here for hazard details and duration
Dense Fog Advisory
  •  
    Dense Fog Advisory December 27, 08:37am until December 27, 12:00pm

    NOW until 12:00pm Sat

    Dense Fog Advisory

  • Today

    High: 47 °F

    Dense Fog

  • Tonight

    Tonight: A 30 percent chance of rain after 3am.  Areas of fog.  Otherwise, cloudy, with a low around 41. Southeast wind around 5 mph becoming calm  in the evening.

    Low: 41 °F

    Chance Rain
    and Areas Fog

  • Sunday

    Sunday: Rain before 3pm, then rain and snow.  Temperature rising to near 49 by 11am, then falling to around 31 during the remainder of the day. Breezy, with a light and variable wind becoming northwest 20 to 25 mph in the morning. Winds could gust as high as 35 mph.  Chance of precipitation is 90%. Little or no snow accumulation expected.

    High: 49 °F

    Rain then
    Rain/Snow and
    Breezy

  • Sunday Night

    Sunday Night: A 50 percent chance of snow.  Mostly cloudy, with a low around 10. Wind chill values as low as -10. Windy, with a west wind 25 to 30 mph, with gusts as high as 45 mph.  New snow accumulation of less than a half inch possible.

    Low: 10 °F

    Chance Snow
    and Windy

  • Monday

    Monday: Partly sunny, with a high near 17. Blustery.

    High: 17 °F

    Partly Sunny
    and Blustery

  • Monday Night

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

    Low: 8 °F

    Mostly Clear
    and Blustery
    then Mostly
    Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 29.

    High: 29 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 20.

    Low: 20 °F

    Mostly Cloudy

Detailed Forecast

Today
Widespread dense fog, mainly before 11am. Otherwise, cloudy, with a high near 47. Southeast wind 5 to 10 mph.
Tonight
A 30 percent chance of rain after 3am. Areas of fog. Otherwise, cloudy, with a low around 41. Southeast wind around 5 mph becoming calm in the evening.
Sunday
Rain before 3pm, then rain and snow. Temperature rising to near 49 by 11am, then falling to around 31 during the remainder of the day. Breezy, with a light and variable wind becoming northwest 20 to 25 mph in the morning. Winds could gust as high as 35 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Sunday Night
A 50 percent chance of snow. Mostly cloudy, with a low around 10. Wind chill values as low as -10. Windy, with a west wind 25 to 30 mph, with gusts as high as 45 mph. New snow accumulation of less than a half inch possible.
Monday
Partly sunny, with a high near 17. Blustery.
Monday Night
Mostly clear, with a low around 8. Blustery.
Tuesday
Mostly sunny, with a high near 29.
Tuesday Night
Mostly cloudy, with a low around 20.
Wednesday
Mostly cloudy, with a high near 30.
Wednesday Night
Mostly cloudy, with a low around 6.
New Year's Day
Sunny, with a high near 15.
Thursday Night
Mostly clear, with a low around 2.
Friday
Mostly sunny, with a high near 19.
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ABOUT THIS FORECAST

 
Point Forecast:
Olin IA
 42.01°N 91.13°W (Elev. 741 ft)
6:36 am CST Dec 27, 2025
8am CST Dec 27, 2025-6pm CST Jan 2, 2026
 
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