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.

Overcast

73°F

23°C

Humidity 74%
Wind Speed SE 9 mph
Barometer 30.04 in (1016.3 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 18 Sep 3:53 pm CDT
Extended Forecast for

Ventura IASimilar City Names

Flood Watch September 18, 07:00pm until September 19, 01:00pm
Click here for hazard details and duration
Flood Watch

  • This Afternoon

    This Afternoon: A 30 percent chance of showers and thunderstorms. Cloudy, with a steady temperature around 66. Southeast wind around 14 mph, with gusts as high as 24 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 66 °F

    Chance
    T-storms

  • Tonight

    Tonight: Showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then a chance of showers and thunderstorms after 4am. Steady temperature around 66. East southeast wind 9 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.

    Low: 66 °F

    T-storms
    Likely then
    Showers

  • Saturday

    Saturday: A chance of showers and thunderstorms. Cloudy, with a high near 72. East southeast wind around 7 mph becoming west northwest in the morning. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 72 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: A 40 percent chance of showers, mainly before 11pm. Cloudy, with a low around 56. North northeast wind 9 to 13 mph. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 56 °F

    Chance
    Showers

  • Sunday

    Sunday: A 20 percent chance of showers after 7am. Mostly cloudy, with a high near 65. East northeast wind around 15 mph, with gusts as high as 22 mph.

    High: 65 °F

    Slight Chance
    Showers

  • Sunday Night

    Sunday Night: A 30 percent chance of showers after 1am. Cloudy, with a low around 50.

    Low: 50 °F

    Mostly Cloudy
    then Chance
    Showers

  • Monday

    Monday: A 50 percent chance of showers. Mostly cloudy, with a high near 60.

    High: 60 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 46.

    Low: 46 °F

    Slight Chance
    Showers

  • Tuesday

    Tuesday: Partly sunny, with a high near 60.

    High: 60 °F

    Partly Sunny

Detailed Forecast

This Afternoon
A 30 percent chance of showers and thunderstorms. Cloudy, with a steady temperature around 66. Southeast wind around 14 mph, with gusts as high as 24 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 4am, then a chance of showers and thunderstorms after 4am. Steady temperature around 66. East southeast wind 9 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.
Saturday
A chance of showers and thunderstorms. Cloudy, with a high near 72. East southeast wind around 7 mph becoming west northwest in the morning. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A 40 percent chance of showers, mainly before 11pm. Cloudy, with a low around 56. North northeast wind 9 to 13 mph. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday
A 20 percent chance of showers after 7am. Mostly cloudy, with a high near 65. East northeast wind around 15 mph, with gusts as high as 22 mph.
Sunday Night
A 30 percent chance of showers after 1am. Cloudy, with a low around 50.
Monday
A 50 percent chance of showers. Mostly cloudy, with a high near 60.
Monday Night
A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 46.
Tuesday
Partly sunny, with a high near 60.
Tuesday Night
Partly cloudy, with a low around 43.
Wednesday
Sunny, with a high near 64.
Wednesday Night
Partly cloudy, with a low around 48.
Thursday
Partly sunny, with a high near 66.
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ABOUT THIS FORECAST

 
Point Forecast:
Ventura IASimilar City Names
 43.13°N 93.46°W
Last Update:
2:57 pm CDT Sep 18, 2026
Forecast Valid:
4pm CDT Sep 18, 2026-6pm CDT Sep 24, 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