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National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
7-Day Forecast 43.15°N 93.19°W (Text-Only)
NWS Forecast for: Mason City IA
Issued by: National Weather Service Des Moines, IA
Last Update: 3:16 am CDT Jun 30, 2026		Print

  • Overnight

    Overnight: Mostly cloudy, with a steady temperature around 78. South southwest wind 5 to 8 mph.

    Low: 78 °F

    Mostly Cloudy




  • Tuesday

    Tuesday: A slight chance of showers and thunderstorms between 7am and 8am. Mostly sunny, with a high near 93. Heat index values as high as 102. South southwest wind 8 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.

    High: 93 °F

    Slight Chance
    T-storms then
    Mostly Sunny


  • Tuesday
    Night

    Tuesday Night: A 50 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 72. South southwest wind 7 to 9 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 72 °F

    Partly Cloudy
    then Chance
    T-storms


  • Wednesday

    Wednesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4pm. Mostly sunny, with a high near 90. Breezy, with a south southwest wind 10 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 90 °F

    Chance
    T-storms then
    Showers
    Likely and
    Breezy

  • Wednesday
    Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Mostly cloudy, with a low around 70. Southwest wind 8 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 70 °F

    Showers
    Likely



  • Thursday

    Thursday: A slight chance of showers, with thunderstorms also possible after 7am. Mostly sunny, with a high near 89. Chance of precipitation is 20%.

    High: 89 °F

    Slight Chance
    T-storms



  • Thursday
    Night

    Thursday Night: Showers and possibly a thunderstorm. Low around 70. Chance of precipitation is 80%.

    Low: 70 °F

    Showers




  • Friday

    Friday: A 30 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 89.

    High: 89 °F

    Chance
    T-storms



  • Friday
    Night

    Friday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 69. Chance of precipitation is 50%.

    Low: 69 °F

    Chance
    T-storms





    • Overnight: Mostly cloudy, with a steady temperature around 78. South southwest wind 5 to 8 mph.

    Tuesday: A slight chance of showers and thunderstorms between 7am and 8am. Mostly sunny, with a high near 93. Heat index values as high as 102. South southwest wind 8 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.

    Tuesday Night: A 50 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 72. South southwest wind 7 to 9 mph. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Wednesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 4pm. Mostly sunny, with a high near 90. Breezy, with a south southwest wind 10 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Wednesday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms between 1am and 4am, then a chance of showers after 4am. Mostly cloudy, with a low around 70. Southwest wind 8 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 70%. New rainfall amounts between a half and three quarters of an inch possible.

    Thursday: A slight chance of showers, with thunderstorms also possible after 7am. Mostly sunny, with a high near 89. Chance of precipitation is 20%.

    Thursday Night: Showers and possibly a thunderstorm. Low around 70. Chance of precipitation is 80%.

    Friday: A 30 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 89.

    Friday Night: A chance of showers and thunderstorms. Partly cloudy, with a low around 69. Chance of precipitation is 50%.

    Independence Day: A 50 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 88.

    Saturday Night: A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 67.

    Sunday: A 30 percent chance of showers. Partly sunny, with a high near 85.

    Sunday Night: Partly cloudy, with a low around 64.

    Monday: Mostly sunny, with a high near 85.


    Mason City IA
     43.15°N 93.19°W

    Visit your local NWS office at: https://www.weather.gov/desmoines