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

Heavy Lake Effect Snow; Subfreezing Temperatures in the Eastern U.S.

A multi-day heavy lake effect snow event is expected downwind of Lakes Erie and Ontario through New Year's Day. The Arctic front will continue to bring increasing winds to the Northeast that will remain gusty. Subfreezing overnight low temperatures will be found as far south as the Gulf Coast. Read More >

Hazardous Weather Conditions

Current conditions at

Monticello Regional Airport (KMXO)

Lat: 42.22°NLon: 91.16°WElev: 827ft.

Fair

9°F

-13°C

Humidity 85%
Wind Speed NW 13 mph
Barometer 30.30 in
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Wind Chill-7°F (-22°C)
Last update 30 Dec 2:35 am CST
Extended Forecast for

Coggon IA

  • Overnight

    Overnight: Mostly clear, with a low around 6. Wind chill values as low as -5. Northwest wind around 10 mph.

    Low: 6 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 29. Wind chill values as low as zero. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 29 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a steady temperature around 28. Northwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 28 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of snow after noon. Mostly cloudy, with a high near 30. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 30 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 7.

    Low: 7 °F

    Partly Cloudy

  • New Year's Day

    New Year's Day: Sunny, with a high near 20.

    High: 20 °F

    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 12.

    Low: 12 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 25.

    High: 25 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 13.

    Low: 13 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 6. Wind chill values as low as -5. Northwest wind around 10 mph.
Tuesday
Increasing clouds, with a high near 29. Wind chill values as low as zero. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly cloudy, with a steady temperature around 28. Northwest wind around 10 mph, with gusts as high as 20 mph.
Wednesday
A 20 percent chance of snow after noon. Mostly cloudy, with a high near 30. Northwest wind 10 to 15 mph, with gusts as high as 20 mph.
Wednesday Night
Partly cloudy, with a low around 7.
New Year's Day
Sunny, with a high near 20.
Thursday Night
Partly cloudy, with a low around 12.
Friday
Mostly sunny, with a high near 25.
Friday Night
Mostly cloudy, with a low around 13.
Saturday
Partly sunny, with a high near 28.
Saturday Night
Mostly cloudy, with a low around 18.
Sunday
Mostly sunny, with a high near 35.
Sunday Night
Partly cloudy, with a low around 22.
Monday
Partly sunny, with a high near 34.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Coggon IA
 42.28°N 91.53°W (Elev. 935 ft)
Last Update:
11:16 pm CST Dec 29, 2025
Forecast Valid:
2am CST Dec 30, 2025-6pm CST Jan 5, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation