National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Dangerous Heat over the South-Central and Southwest U.S. Through Next Week

Dangerous heat persists across the Desert Southwest through this weekend and across the Southern Plains and Lower Mississippi Valley through at least the middle of next week. Numerous daily record high temperatures are expected through at least Tuesday for much of Texas and Oklahoma as well as portions of Louisiana, New Mexico, and Arizona. Read More >

Hazardous Weather Conditions

Current conditions at

Mason City Municipal Airport (KMCW)

Lat: 43.15°NLon: 93.33°WElev: 1188ft.

Fair

78°F

26°C

Humidity 71%
Wind Speed NW 12 mph
Barometer 30.01 in (1015.2 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 21 Aug 10:53 am CDT
Extended Forecast for

5 Miles S Mason City IA

  • Today

    Today: Sunny, with a high near 82. Northwest wind 8 to 11 mph, with gusts as high as 18 mph.

    High: 82 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 60. Northwest wind 3 to 8 mph.

    Low: 60 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 78. North northwest wind 6 to 13 mph, with gusts as high as 20 mph.

    High: 78 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 55. North wind 3 to 7 mph.

    Low: 55 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 76. Calm wind.

    High: 76 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 56.

    Low: 56 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Monday

    Monday: A 20 percent chance of showers before 1pm. Partly sunny, with a high near 75.

    High: 75 °F

    Slight Chance
    Showers

  • Monday Night

    Monday Night: A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 59.

    Low: 59 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Tuesday

    Tuesday: Partly sunny, with a high near 81.

    High: 81 °F

    Partly Sunny

Detailed Forecast

Today
Sunny, with a high near 82. Northwest wind 8 to 11 mph, with gusts as high as 18 mph.
Tonight
Mostly clear, with a low around 60. Northwest wind 3 to 8 mph.
Saturday
Sunny, with a high near 78. North northwest wind 6 to 13 mph, with gusts as high as 20 mph.
Saturday Night
Mostly clear, with a low around 55. North wind 3 to 7 mph.
Sunday
Mostly sunny, with a high near 76. Calm wind.
Sunday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 56.
Monday
A 20 percent chance of showers before 1pm. Partly sunny, with a high near 75.
Monday Night
A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 59.
Tuesday
Partly sunny, with a high near 81.
Tuesday Night
A 30 percent chance of showers. Partly cloudy, with a low around 62.
Wednesday
Sunny, with a high near 80.
Wednesday Night
Mostly clear, with a low around 59.
Thursday
Sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
5 Miles S Mason City IA
 43.08°N 93.19°W
Last Update:
9:56 am CDT Aug 21, 2026
Forecast Valid:
11am CDT Aug 21, 2026-6pm CDT Aug 27, 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