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Hazardous Weather Conditions

Current conditions at

Mason City Municipal Airport (KMCW)

Lat: 43.15°NLon: 93.33°WElev: 1188ft.

Fair

-3°F

-19°C

Humidity 68%
Wind Speed NW 20 mph
Barometer 30.53 in (1036.6 mb)
Dewpoint -11°F (-24°C)
Visibility 10.00 mi
Wind Chill-26°F (-32°C)
Last update 14 Dec 1:53 am CST
Extended Forecast for

Grafton IA

Cold Weather Advisory December 14, 02:32am until December 14, 10:00am
Click here for hazard details and duration
Cold Weather Advisory
  •  
    Cold Weather Advisory December 14, 02:32am until December 14, 10:00am

    NOW until 10:00am Sun

    Cold Weather Advisory

  • Overnight

    Low: -16 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny and cold, with a high near 7. Wind chill values as low as -30. North northwest wind 5 to 10 mph becoming south in the afternoon.

    High: 7 °F

    Cold

  • Sunday Night

    Sunday Night: Partly cloudy, with a temperature falling to near -3 by 8pm, then rising to around 14 during the remainder of the night. Wind chill values as low as -20. Breezy, with a south wind 11 to 18 mph, with gusts as high as 30 mph.

    Low: -3 °F⇑

    Partly Cloudy
    and Breezy

  • Monday

    Monday: Partly sunny, with a high near 29. Wind chill values as low as zero. Southwest wind 6 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 22 mph.

    High: 29 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 14. Calm wind becoming south southwest 5 to 7 mph after midnight.

    Low: 14 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 38.

    High: 38 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 22.

    Low: 22 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 37.

    High: 37 °F

    Partly Sunny

Detailed Forecast

Overnight
Partly cloudy, with a low around -16. Wind chill values as low as -30. North northwest wind 8 to 11 mph, with gusts as high as 21 mph.
Sunday
Sunny and cold, with a high near 7. Wind chill values as low as -30. North northwest wind 5 to 10 mph becoming south in the afternoon.
Sunday Night
Partly cloudy, with a temperature falling to near -3 by 8pm, then rising to around 14 during the remainder of the night. Wind chill values as low as -20. Breezy, with a south wind 11 to 18 mph, with gusts as high as 30 mph.
Monday
Partly sunny, with a high near 29. Wind chill values as low as zero. Southwest wind 6 to 14 mph becoming northwest in the afternoon. Winds could gust as high as 22 mph.
Monday Night
Mostly cloudy, with a low around 14. Calm wind becoming south southwest 5 to 7 mph after midnight.
Tuesday
Mostly cloudy, with a high near 38.
Tuesday Night
Partly cloudy, with a low around 22.
Wednesday
Partly sunny, with a high near 37.
Wednesday Night
A 40 percent chance of rain. Mostly cloudy, with a low around 23. Breezy.
Thursday
Partly sunny, with a high near 35. Windy.
Thursday Night
Partly cloudy, with a low around -1. Blustery.
Friday
Partly sunny, with a high near 28. Breezy.
Friday Night
Mostly cloudy, with a low around 16.
Saturday
Partly sunny, with a high near 32.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grafton IA
 43.34°N 93.07°W
Last Update:
10:36 pm CST Dec 13, 2025
Forecast Valid:
2am CST Dec 14, 2025-6pm CST Dec 20, 2025
 
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