Air Quality Concerns; Fire Weather in the West; Flash Flooding in the Southeast

Wildfire smoke continues to result in poor air quality from the Upper Midwest into the Northeast. Multiple days of hot, dry and windy conditions are expected to bring fire weather concerns for portions of the Four Corners region into the central Great Basin and Rockies. Heavy rainfall and a flash flooding threat continues in the Southeast. Severe thunderstorms continue across the Northern Plains Read More >

Hazardous Weather Conditions

Current conditions at

Mason City Municipal Airport (KMCW)

Lat: 43.15°NLon: 93.33°WElev: 1188ft.

Partly Cloudy

77°F

25°C

Humidity 66%
Wind Speed SE 14 G 22 mph
Barometer 30.22 in (1022.5 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 5 Aug 12:53 pm CDT
Extended Forecast for

Grafton IA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 79. South southeast wind 8 to 10 mph.

    High: 79 °F

    Mostly Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 63. Southeast wind around 8 mph.

    Low: 63 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 20 percent chance of showers and thunderstorms before 10am.  Partly sunny, with a high near 82. South southeast wind 7 to 13 mph, with gusts as high as 20 mph.

    High: 82 °F

    Slight Chance
    T-storms then
    Partly Sunny

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms after 1am.  Mostly cloudy, with a low around 68. South southeast wind around 9 mph.  New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 68 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Thursday

    Thursday: A 20 percent chance of showers and thunderstorms before 1pm.  Mostly sunny, with a high near 84. South wind 7 to 11 mph.

    High: 84 °F

    Slight Chance
    T-storms

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 70.

    Low: 70 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 87. Breezy.

    High: 87 °F

    Mostly Sunny
    then Sunny
    and Breezy

  • Friday Night

    Friday Night: A 30 percent chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 70.

    Low: 70 °F

    Mostly Clear
    then Chance
    T-storms

  • Saturday

    Saturday: A chance of showers, with thunderstorms also possible after 1pm.  Partly sunny, with a high near 83. Chance of precipitation is 40%.

    High: 83 °F

    Chance
    Showers then
    Chance
    T-storms

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 79. South southeast wind 8 to 10 mph.
Tonight
Partly cloudy, with a low around 63. Southeast wind around 8 mph.
Wednesday
A 20 percent chance of showers and thunderstorms before 10am. Partly sunny, with a high near 82. South southeast wind 7 to 13 mph, with gusts as high as 20 mph.
Wednesday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 68. South southeast wind around 9 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 84. South wind 7 to 11 mph.
Thursday Night
Partly cloudy, with a low around 70.
Friday
Sunny, with a high near 87. Breezy.
Friday Night
A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 70.
Saturday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 83. Chance of precipitation is 40%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Chance of precipitation is 50%.
Sunday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 81.
Sunday Night
A 30 percent chance of showers and thunderstorms. Partly cloudy, with a low around 62.
Monday
A 30 percent chance of showers. Mostly sunny, with a high near 81.
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ABOUT THIS FORECAST

 
Point Forecast:
Grafton IA
 43.34°N 93.07°W
12:25 pm CDT Aug 5, 2025
12pm CDT Aug 5, 2025-6pm CDT Aug 11, 2025
 
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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