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 10 mph
Barometer 30.29 in
Dewpoint 5°F (-15°C)
Visibility 10.00 mi
Wind Chill-5°F (-21°C)
Last update 30 Dec 1:35 am CST
Extended Forecast for

New Vienna IA

  • Overnight

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

    Low: 6 °F

    Mostly Clear

  • Tuesday

    Tuesday: Increasing clouds, with a high near 28. Wind chill values as low as -5. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 28 °F

    Increasing
    Clouds

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 22. Northwest wind around 10 mph, with gusts as high as 20 mph.

    Low: 22 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: A 50 percent chance of snow after noon. Mostly cloudy, with a high near 29. Northwest wind 10 to 15 mph, with gusts as high as 20 mph. New snow accumulation of less than a half inch possible.

    High: 29 °F

    Mostly Cloudy
    then Chance
    Snow

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 5.

    Low: 5 °F

    Partly Cloudy

  • New Year's Day

    New Year's Day: Mostly sunny, with a high near 17.

    High: 17 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 9.

    Low: 9 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 24.

    High: 24 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 12.

    Low: 12 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 6. Wind chill values as low as -10. Northwest wind 5 to 10 mph.
Tuesday
Increasing clouds, with a high near 28. Wind chill values as low as -5. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Tuesday Night
Mostly cloudy, with a low around 22. Northwest wind around 10 mph, with gusts as high as 20 mph.
Wednesday
A 50 percent chance of snow after noon. Mostly cloudy, with a high near 29. Northwest wind 10 to 15 mph, with gusts as high as 20 mph. New snow accumulation of less than a half inch possible.
Wednesday Night
Partly cloudy, with a low around 5.
New Year's Day
Mostly sunny, with a high near 17.
Thursday Night
Partly cloudy, with a low around 9.
Friday
Mostly sunny, with a high near 24.
Friday Night
Mostly cloudy, with a low around 12.
Saturday
Partly sunny, with a high near 27.
Saturday Night
Mostly cloudy, with a low around 16.
Sunday
Mostly sunny, with a high near 33.
Sunday Night
Mostly cloudy, with a low around 22.
Monday
Partly sunny, with a high near 33.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
New Vienna IA
 42.55°N 91.11°W (Elev. 1053 ft)
Last Update:
11:16 pm CST Dec 29, 2025
Forecast Valid:
1am CST Dec 30, 2025-6pm CST Jan 5, 2026
 
Forecast Discussion
 
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Additional Resources

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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