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

26°F

-3°C

Humidity 88%
Wind Speed Calm
Barometer 29.98 in (1016.6 mb)
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Last update 15 Dec 4:53 pm CST
Extended Forecast for

4 Miles NW Grafton IA

  • Tonight

    Tonight: Patchy fog before midnight, then areas of fog after 1am. Areas of freezing fog between midnight and 1am. Otherwise, mostly cloudy, with a low around 14. Wind chill values as low as 5. Calm wind becoming south 5 to 8 mph after midnight.

    Low: 14 °F

    Areas
    Freezing Fog
    and Areas Fog

  • Tuesday

    Tuesday: Patchy fog before 10am. Otherwise, partly sunny, with a high near 37. Wind chill values as low as 5. South wind 9 to 14 mph becoming west in the afternoon. Winds could gust as high as 21 mph.

    High: 37 °F

    Patchy Fog
    then Partly
    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 20. Northwest wind 6 to 13 mph, with gusts as high as 21 mph.

    Low: 20 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Increasing clouds, with a high near 34. Breezy, with a west northwest wind 5 to 10 mph becoming south 15 to 20 mph in the afternoon. Winds could gust as high as 29 mph.

    High: 34 °F

    Mostly Sunny
    then Partly
    Sunny and
    Breezy

  • Wednesday Night

    Wednesday Night: Rain likely, mainly after midnight. Cloudy, with a low around 30. Windy, with a south wind 18 to 21 mph becoming west after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 30 °F

    Slight Chance
    Rain and
    Windy then
    Rain Likely
    and Breezy

  • Thursday

    Thursday: A chance of rain and snow before noon, then a slight chance of snow. Partly sunny, with a high near 34. Windy. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 34 °F

    Windy. Chance
    Rain/Snow
    then Slight
    Chance Snow

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around -4. Windy.

    Low: -4 °F

    Mostly Cloudy
    and Windy
    then Partly
    Cloudy

  • Friday

    Friday: Partly sunny, with a high near 27. Breezy.

    High: 27 °F

    Partly Sunny
    then Partly
    Sunny and
    Breezy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 17.

    Low: 17 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Patchy fog before midnight, then areas of fog after 1am. Areas of freezing fog between midnight and 1am. Otherwise, mostly cloudy, with a low around 14. Wind chill values as low as 5. Calm wind becoming south 5 to 8 mph after midnight.
Tuesday
Patchy fog before 10am. Otherwise, partly sunny, with a high near 37. Wind chill values as low as 5. South wind 9 to 14 mph becoming west in the afternoon. Winds could gust as high as 21 mph.
Tuesday Night
Partly cloudy, with a low around 20. Northwest wind 6 to 13 mph, with gusts as high as 21 mph.
Wednesday
Increasing clouds, with a high near 34. Breezy, with a west northwest wind 5 to 10 mph becoming south 15 to 20 mph in the afternoon. Winds could gust as high as 29 mph.
Wednesday Night
Rain likely, mainly after midnight. Cloudy, with a low around 30. Windy, with a south wind 18 to 21 mph becoming west after midnight. Winds could gust as high as 30 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
A chance of rain and snow before noon, then a slight chance of snow. Partly sunny, with a high near 34. Windy. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Partly cloudy, with a low around -4. Windy.
Friday
Partly sunny, with a high near 27. Breezy.
Friday Night
Mostly cloudy, with a low around 17.
Saturday
Partly sunny, with a high near 31.
Saturday Night
Partly cloudy, with a low around 8.
Sunday
Mostly sunny, with a high near 25.
Sunday Night
Mostly cloudy, with a low around 16.
Monday
Mostly cloudy, with a high near 30.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NW Grafton IA
 43.36°N 93.13°W
Last Update:
5:01 pm CST Dec 15, 2025
Forecast Valid:
5pm CST Dec 15, 2025-6pm CST Dec 22, 2025
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation