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

69°F

21°C

Humidity 84%
Wind Speed S 18 G 29 mph
Barometer 29.82 in (1008.5 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 20 Jun 10:53 am CDT
Extended Forecast for

Mason City IA

Heat Advisory June 21, 12:00pm until June 22, 09:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: Cloudy, then gradually becoming mostly sunny, with a high near 90. Breezy, with a south wind 16 to 18 mph, with gusts as high as 29 mph.

    High: 90 °F

    Decreasing
    Clouds and
    Breezy

  • Tonight

    Tonight: Mostly clear, with a low around 75. Breezy, with a south southwest wind 16 to 20 mph, with gusts as high as 31 mph.

    Low: 75 °F

    Mostly Clear
    and Breezy

  • Saturday

    Saturday: Sunny, with a high near 94. Heat index values as high as 104. Windy, with a south southwest wind 18 to 22 mph, with gusts as high as 34 mph.

    High: 94 °F

    Sunny and
    Windy

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 75. Breezy, with a south southwest wind around 18 mph, with gusts as high as 29 mph.

    Low: 75 °F

    Mostly Clear
    and Breezy

  • Sunday

    Sunday: Sunny, with a high near 94. Windy, with a south wind 16 to 22 mph, with gusts as high as 34 mph.

    High: 94 °F

    Sunny and
    Windy

  • Sunday Night

    Sunday Night: A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 73. Breezy. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 73 °F

    Chance
    T-storms and
    Breezy

  • Monday

    Monday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 86. Chance of precipitation is 70%.

    High: 86 °F

    Chance
    Showers then
    Showers
    Likely

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm. Low around 62. Chance of precipitation is 90%.

    Low: 62 °F

    Showers

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm. High near 77. Chance of precipitation is 80%.

    High: 77 °F

    Showers

Detailed Forecast

Today
Cloudy, then gradually becoming mostly sunny, with a high near 90. Breezy, with a south wind 16 to 18 mph, with gusts as high as 29 mph.
Tonight
Mostly clear, with a low around 75. Breezy, with a south southwest wind 16 to 20 mph, with gusts as high as 31 mph.
Saturday
Sunny, with a high near 94. Heat index values as high as 104. Windy, with a south southwest wind 18 to 22 mph, with gusts as high as 34 mph.
Saturday Night
Mostly clear, with a low around 75. Breezy, with a south southwest wind around 18 mph, with gusts as high as 29 mph.
Sunday
Sunny, with a high near 94. Windy, with a south wind 16 to 22 mph, with gusts as high as 34 mph.
Sunday Night
A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 73. Breezy. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 86. Chance of precipitation is 70%.
Monday Night
Showers and possibly a thunderstorm. Low around 62. Chance of precipitation is 90%.
Tuesday
Showers and possibly a thunderstorm. High near 77. Chance of precipitation is 80%.
Tuesday Night
Showers and possibly a thunderstorm. Low around 65. Chance of precipitation is 90%.
Wednesday
Showers and possibly a thunderstorm. High near 82. Chance of precipitation is 80%.
Wednesday Night
Showers and possibly a thunderstorm. Low around 65. Chance of precipitation is 80%.
Thursday
Showers likely and possibly a thunderstorm. Partly sunny, with a high near 80. Chance of precipitation is 60%.
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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:
11:00 am CDT Jun 20, 2025
Forecast Valid:
11am CDT Jun 20, 2025-6pm CDT Jun 26, 2025
 
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