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

Mason City Municipal Airport (KMCW)

Lat: 43.15°NLon: 93.33°WElev: 1188ft.

Fair

30°F

-1°C

Humidity 88%
Wind Speed NW 8 mph
Barometer 30.15 in (1021.9 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill22°F (-6°C)
Last update 9 Jan 8:53 pm CST
Extended Forecast for

Grafton IA

  • Tonight

    Tonight: A chance of snow or flurries before 3am, then a chance of flurries after 5am. Mostly cloudy, with a low around 24. Calm wind becoming northwest 5 to 9 mph after midnight. Chance of precipitation is 30%. Total nighttime snow accumulation of less than a half inch possible.

    Low: 24 °F

    Mostly Cloudy
    then Chance
    Snow

  • Saturday

    Saturday: A slight chance of snow before 9am, then a chance of flurries between 9am and 11am. Partly sunny, with a high near 27. Wind chill values as low as 10. Windy, with a northwest wind 9 to 14 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 20%.

    High: 27 °F

    Slight Chance
    Snow and
    Blustery then
    Mostly Cloudy
    and Windy

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 14. Wind chill values as low as zero. Blustery, with a northwest wind 13 to 20 mph, with gusts as high as 26 mph.

    Low: 14 °F

    Mostly Cloudy
    and Blustery

  • Sunday

    Sunday: Mostly sunny, with a high near 28. Wind chill values as low as zero. Northwest wind 9 to 11 mph becoming southwest in the afternoon. Winds could gust as high as 18 mph.

    High: 28 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 23. South southwest wind 9 to 11 mph, with gusts as high as 18 mph.

    Low: 23 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 40.

    High: 40 °F

    Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 33.

    Low: 33 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A 20 percent chance of rain after noon. Partly sunny, with a high near 43. Breezy.

    High: 43 °F

    Mostly Sunny
    then Slight
    Chance Rain
    and Breezy

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 24. Blustery.

    Low: 24 °F

    Mostly Cloudy
    and Blustery

Detailed Forecast

Tonight
A chance of snow or flurries before 3am, then a chance of flurries after 5am. Mostly cloudy, with a low around 24. Calm wind becoming northwest 5 to 9 mph after midnight. Chance of precipitation is 30%. Total nighttime snow accumulation of less than a half inch possible.
Saturday
A slight chance of snow before 9am, then a chance of flurries between 9am and 11am. Partly sunny, with a high near 27. Wind chill values as low as 10. Windy, with a northwest wind 9 to 14 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 30 mph. Chance of precipitation is 20%.
Saturday Night
Mostly cloudy, with a low around 14. Wind chill values as low as zero. Blustery, with a northwest wind 13 to 20 mph, with gusts as high as 26 mph.
Sunday
Mostly sunny, with a high near 28. Wind chill values as low as zero. Northwest wind 9 to 11 mph becoming southwest in the afternoon. Winds could gust as high as 18 mph.
Sunday Night
Partly cloudy, with a low around 23. South southwest wind 9 to 11 mph, with gusts as high as 18 mph.
Monday
Sunny, with a high near 40.
Monday Night
Mostly cloudy, with a low around 33.
Tuesday
A 20 percent chance of rain after noon. Partly sunny, with a high near 43. Breezy.
Tuesday Night
Mostly cloudy, with a low around 24. Blustery.
Wednesday
Partly sunny, with a high near 28.
Wednesday Night
Partly cloudy, with a low around 15.
Thursday
Partly sunny, with a high near 30.
Thursday Night
A 30 percent chance of snow. Mostly cloudy, with a low around 22.
Friday
A 30 percent chance of snow. Mostly cloudy, with a high near 29.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Grafton IA
 43.34°N 93.07°W
Last Update:
5:11 pm CST Jan 9, 2026
Forecast Valid:
9pm CST Jan 9, 2026-6pm CST Jan 16, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation