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

77°F

25°C

Humidity 79%
Wind Speed S 15 G 25 mph
Barometer 29.61 in (1001.0 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 21 Jun 5:53 am CDT
Extended Forecast for

4 Miles N Swaledale IA

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

  • Today

    Today: Sunny, with a high near 93. Heat index values as high as 102. Windy, with a south southwest wind 20 to 25 mph, with gusts as high as 37 mph.

    High: 93 °F

    Sunny and
    Windy

  • Tonight

    Tonight: Mostly clear, with a low around 74. Windy, with a south southwest wind 18 to 21 mph, with gusts as high as 31 mph.

    Low: 74 °F

    Mostly Clear
    and Windy

  • Sunday

    Sunday: Sunny, with a high near 93. Heat index values as high as 101. Windy, with a south wind 18 to 24 mph, with gusts as high as 37 mph.

    High: 93 °F

    Sunny and
    Windy

  • Sunday Night

    Sunday Night: A 30 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 73. Windy, with a south wind 18 to 21 mph, with gusts as high as 32 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 73 °F

    Windy. Mostly
    Clear then
    Chance
    T-storms

  • Monday

    Monday: A slight chance of showers before 10am, then a slight chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 86. Breezy, with a south southwest wind 13 to 16 mph becoming northwest in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 86 °F

    Slight Chance
    T-storms and
    Breezy then
    Showers
    Likely

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm. Low around 63. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.

    Low: 63 °F

    Showers

  • Tuesday

    Tuesday: Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 78. Chance of precipitation is 70%.

    High: 78 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm. Low around 65. Chance of precipitation is 90%.

    Low: 65 °F

    Showers

  • Wednesday

    Wednesday: Showers and possibly a thunderstorm. High near 83. Chance of precipitation is 90%.

    High: 83 °F

    Showers

Detailed Forecast

Today
Sunny, with a high near 93. Heat index values as high as 102. Windy, with a south southwest wind 20 to 25 mph, with gusts as high as 37 mph.
Tonight
Mostly clear, with a low around 74. Windy, with a south southwest wind 18 to 21 mph, with gusts as high as 31 mph.
Sunday
Sunny, with a high near 93. Heat index values as high as 101. Windy, with a south wind 18 to 24 mph, with gusts as high as 37 mph.
Sunday Night
A 30 percent chance of showers and thunderstorms after 1am. Mostly clear, with a low around 73. Windy, with a south wind 18 to 21 mph, with gusts as high as 32 mph. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
A slight chance of showers before 10am, then a slight chance of showers and thunderstorms between 10am and 1pm, then showers likely and possibly a thunderstorm after 1pm. Mostly sunny, with a high near 86. Breezy, with a south southwest wind 13 to 16 mph becoming northwest in the afternoon. Winds could gust as high as 24 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday Night
Showers and possibly a thunderstorm. Low around 63. Chance of precipitation is 80%. New rainfall amounts between three quarters and one inch possible.
Tuesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 78. Chance of precipitation is 70%.
Tuesday Night
Showers and possibly a thunderstorm. Low around 65. Chance of precipitation is 90%.
Wednesday
Showers and possibly a thunderstorm. High near 83. Chance of precipitation is 90%.
Wednesday Night
Showers and possibly a thunderstorm. Low around 65. Chance of precipitation is 90%.
Thursday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 80. Chance of precipitation is 60%.
Thursday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61.
Friday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 81.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles N Swaledale IA
 43.04°N 93.31°W
Last Update:
6:11 am CDT Jun 21, 2025
Forecast Valid:
6am CDT Jun 21, 2025-6pm CDT Jun 27, 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