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

Hazardous Weather Conditions

Current conditions at

Mason City Municipal Airport (KMCW)

Lat: 43.15°NLon: 93.33°WElev: 1188ft.

Fair

-6°F

-21°C

Humidity 78%
Wind Speed W 3 mph
Barometer 30.25 in (1027.3 mb)
Dewpoint -11°F (-24°C)
Visibility 10.00 mi
Last update 20 Jan 2:53 am CST
Extended Forecast for

Mason City IA

Winter Weather Advisory January 20, 03:00pm until January 21, 03:00am
Click here for hazard details and duration
Winter Weather Advisory

  • Overnight

    Overnight: Mostly clear, with a low around -6. Calm wind.

    Low: -6 °F

    Mostly Clear

  • Tuesday

    Tuesday: Snow likely, mainly after 5pm. Increasing clouds, with a high near 16. Wind chill values as low as -10. Calm wind becoming south southwest 5 to 8 mph in the morning. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

    High: 16 °F

    Mostly Sunny
    then Snow
    Likely

  • Tuesday Night

    Tuesday Night: Snow, mainly before midnight. Low around 10. Wind chill values as low as zero. South southeast wind 5 to 8 mph becoming northwest after midnight. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.

    Low: 10 °F

    Snow then
    Chance Snow

  • Wednesday

    Wednesday: A 50 percent chance of snow showers after noon. Patchy blowing snow after 2pm. Partly sunny, with a high near 27. Wind chill values as low as zero. Windy, with a west southwest wind 8 to 13 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 29 mph. New snow accumulation of less than one inch possible.

    High: 27 °F

    Chance Snow
    Showers and
    Patchy
    Blowing Snow

  • Wednesday Night

    Wednesday Night: Patchy blowing snow before 8pm. Partly cloudy, with a low around 3. Windy, with a west northwest wind 17 to 22 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 30 mph.

    Low: 3 °F

    Patchy
    Blowing Snow
    and Windy
    then Partly
    Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 14.

    High: 14 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -19.

    Low: -19 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny and cold, with a high near -10.

    High: -10 °F

    Cold

  • Friday Night

    Friday Night: Partly cloudy, with a low around -19.

    Low: -19 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around -6. Calm wind.
Tuesday
Snow likely, mainly after 5pm. Increasing clouds, with a high near 16. Wind chill values as low as -10. Calm wind becoming south southwest 5 to 8 mph in the morning. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.
Tuesday Night
Snow, mainly before midnight. Low around 10. Wind chill values as low as zero. South southeast wind 5 to 8 mph becoming northwest after midnight. Chance of precipitation is 100%. New snow accumulation of 1 to 3 inches possible.
Wednesday
A 50 percent chance of snow showers after noon. Patchy blowing snow after 2pm. Partly sunny, with a high near 27. Wind chill values as low as zero. Windy, with a west southwest wind 8 to 13 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 29 mph. New snow accumulation of less than one inch possible.
Wednesday Night
Patchy blowing snow before 8pm. Partly cloudy, with a low around 3. Windy, with a west northwest wind 17 to 22 mph decreasing to 7 to 12 mph after midnight. Winds could gust as high as 30 mph.
Thursday
Partly sunny, with a high near 14.
Thursday Night
Partly cloudy, with a low around -19.
Friday
Mostly sunny and cold, with a high near -10.
Friday Night
Partly cloudy, with a low around -19.
Saturday
Partly sunny and cold, with a high near -3.
Saturday Night
Partly cloudy, with a low around -12.
Sunday
Mostly sunny and cold, with a high near 9.
Sunday Night
Partly cloudy, with a low around -6.
Monday
Mostly sunny, with a high near 15.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mason City IA
 43.15°N 93.19°W
Last Update:
2:47 am CST Jan 20, 2026
Forecast Valid:
3am CST Jan 20, 2026-6pm CST Jan 26, 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