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

69°F

21°C

Humidity 93%
Wind Speed SE 10 mph
Barometer 29.91 in (1011.5 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Last update 3 Aug 10:53 pm CDT
Extended Forecast for

Mason City IA

  • Tonight

    Tonight: A 30 percent chance of showers and thunderstorms after 4am. Increasing clouds, with a low around 64. South southeast wind 7 to 9 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 64 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Mostly cloudy, with a high near 73. Southwest wind 6 to 9 mph becoming north in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 73 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms likely before 3am, then a slight chance of showers between 3am and 4am. Mostly cloudy, with a low around 55. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 55 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A 30 percent chance of showers after 4pm. Increasing clouds, with a high near 72. Calm wind. New precipitation amounts of less than a tenth of an inch possible.

    High: 72 °F

    Mostly Sunny
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers before 7pm. Mostly clear, with a low around 53. Calm wind. New precipitation amounts of less than a tenth of an inch possible.

    Low: 53 °F

    Chance
    Showers then
    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 81.

    High: 81 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

Detailed Forecast

Tonight
A 30 percent chance of showers and thunderstorms after 4am. Increasing clouds, with a low around 64. South southeast wind 7 to 9 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Mostly cloudy, with a high near 73. Southwest wind 6 to 9 mph becoming north in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Showers and thunderstorms likely before 3am, then a slight chance of showers between 3am and 4am. Mostly cloudy, with a low around 55. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
A 30 percent chance of showers after 4pm. Increasing clouds, with a high near 72. Calm wind. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
A 30 percent chance of showers before 7pm. Mostly clear, with a low around 53. Calm wind. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Sunny, with a high near 78.
Thursday Night
Mostly clear, with a low around 58.
Friday
Sunny, with a high near 81.
Friday Night
Mostly clear, with a low around 62.
Saturday
Sunny, with a high near 84.
Saturday Night
Mostly clear, with a low around 67.
Sunday
Mostly sunny, with a high near 85.
Sunday Night
A 30 percent chance of showers. Partly cloudy, with a low around 66.
Monday
Mostly sunny, with a high near 84.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mason City IA
 43.15°N 93.19°W
Last Update:
10:51 pm CDT Aug 3, 2026
Forecast Valid:
11pm CDT Aug 3, 2026-6pm CDT Aug 10, 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