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.

Fog

67°F

19°C

Humidity 97%
Wind Speed S 7 mph
Barometer 30.00 in (1014.8 mb)
Dewpoint 66°F (19°C)
Visibility 0.15 mi
Last update 7 Aug 6:53 am CDT
Extended Forecast for

4 Miles ESE Mason City IA

Dense Fog Advisory August 7, 07:04am until August 7, 09:00am
Click here for hazard details and duration
...
  •  
    Dense Fog Advisory August 7, 07:04am until August 7, 09:00am

    NOW until 9:00am Fri

    Dense Fog Advisory

  • Today

    High: 81 °F

    Areas Dense
    Fog then
    Chance
    T-storms

  • Tonight

    Tonight: Patchy fog after 5am. Otherwise, partly cloudy, with a low around 56. Northwest wind 5 to 7 mph.

    Low: 56 °F

    Partly Cloudy
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 7am. Otherwise, mostly sunny, with a high near 80. Calm wind becoming south 5 to 7 mph in the afternoon.

    High: 80 °F

    Patchy Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then showers likely after 4am. Partly cloudy, with a low around 63. South southeast wind around 6 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 63 °F

    Chance
    Showers then
    Showers
    Likely

  • Sunday

    Sunday: Mostly sunny, with a high near 85. South wind 3 to 5 mph.

    High: 85 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Showers and thunderstorms likely, mainly after 1am. Mostly cloudy, with a low around 67. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 67 °F

    Slight Chance
    T-storms then
    T-storms
    Likely

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 83.

    High: 83 °F

    Chance
    T-storms

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy
    then Chance
    T-storms

Detailed Forecast

Today
A chance of showers between noon and 1pm, then a chance of showers and thunderstorms after 1pm. Areas of dense fog before 9am. Otherwise, partly sunny, with a high near 81. Southwest wind 6 to 10 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Patchy fog after 5am. Otherwise, partly cloudy, with a low around 56. Northwest wind 5 to 7 mph.
Saturday
Patchy fog before 7am. Otherwise, mostly sunny, with a high near 80. Calm wind becoming south 5 to 7 mph in the afternoon.
Saturday Night
A chance of showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then showers likely after 4am. Partly cloudy, with a low around 63. South southeast wind around 6 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
Mostly sunny, with a high near 85. South wind 3 to 5 mph.
Sunday Night
Showers and thunderstorms likely, mainly after 1am. Mostly cloudy, with a low around 67. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
A 30 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 83.
Monday Night
A 40 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 63.
Tuesday
A 30 percent chance of showers before 1pm. Partly sunny, with a high near 80.
Tuesday Night
Partly cloudy, with a low around 61.
Wednesday
Partly sunny, with a high near 79.
Wednesday Night
Partly cloudy, with a low around 59.
Thursday
Mostly sunny, with a high near 75.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles ESE Mason City IA
 43.12°N 93.13°W
Last Update:
6:47 am CDT Aug 7, 2026
Forecast Valid:
7am CDT Aug 7, 2026-6pm CDT Aug 13, 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