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Hazardous Weather Conditions

Current conditions at

Mason City Municipal Airport (KMCW)

Lat: 43.15°NLon: 93.33°WElev: 1188ft.

Fair

48°F

9°C

Humidity 96%
Wind Speed Calm
Barometer 30.00 in (1015.5 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 19 Jun 5:53 am CDT
Extended Forecast for

Grafton IA

  • Juneteenth

    Juneteenth: A 50 percent chance of showers and thunderstorms, mainly after 2pm. Increasing clouds, with a high near 77. Breezy, with a light west wind increasing to 11 to 16 mph in the morning. Winds could gust as high as 24 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 77 °F

    Sunny then
    Chance
    T-storms and
    Breezy

  • Tonight

    Tonight: A 20 percent chance of showers and thunderstorms, mainly between 9pm and 10pm. Mostly cloudy during the early evening, then becoming mostly clear, with a low around 53. West wind 6 to 15 mph, with gusts as high as 22 mph.

    Low: 53 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 77. Northwest wind 5 to 8 mph.

    High: 77 °F

    Sunny

  • Saturday Night

    Saturday Night: A 20 percent chance of showers after 1am. Increasing clouds, with a low around 56. Light and variable wind becoming east 5 to 8 mph after midnight.

    Low: 56 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Sunday

    Sunday: A chance of showers before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers after 4pm. Mostly cloudy, with a high near 70. Breezy, with an east wind 10 to 16 mph, with gusts as high as 22 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.

    High: 70 °F

    Chance
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 53.

    Low: 53 °F

    Slight Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A 40 percent chance of showers after 1pm. Partly sunny, with a high near 76.

    High: 76 °F

    Partly Sunny
    then Chance
    Showers

Detailed Forecast

Juneteenth
A 50 percent chance of showers and thunderstorms, mainly after 2pm. Increasing clouds, with a high near 77. Breezy, with a light west wind increasing to 11 to 16 mph in the morning. Winds could gust as high as 24 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A 20 percent chance of showers and thunderstorms, mainly between 9pm and 10pm. Mostly cloudy during the early evening, then becoming mostly clear, with a low around 53. West wind 6 to 15 mph, with gusts as high as 22 mph.
Saturday
Sunny, with a high near 77. Northwest wind 5 to 8 mph.
Saturday Night
A 20 percent chance of showers after 1am. Increasing clouds, with a low around 56. Light and variable wind becoming east 5 to 8 mph after midnight.
Sunday
A chance of showers before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers after 4pm. Mostly cloudy, with a high near 70. Breezy, with an east wind 10 to 16 mph, with gusts as high as 22 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 53.
Monday
Mostly sunny, with a high near 75.
Monday Night
Partly cloudy, with a low around 54.
Tuesday
A 40 percent chance of showers after 1pm. Partly sunny, with a high near 76.
Tuesday Night
A 50 percent chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 55.
Wednesday
Mostly sunny, with a high near 76.
Wednesday Night
Partly cloudy, with a low around 54.
Thursday
Mostly sunny, with a high near 78.
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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:
6:12 am CDT Jun 19, 2026
Forecast Valid:
6am CDT Jun 19, 2026-6pm CDT Jun 25, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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