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National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
7-Day Forecast 41.65°N 93.45°W (Text-Only)
NWS Forecast for: Altoona IA
Issued by: National Weather Service Des Moines, IA
Last Update: 5:56 pm CDT Jun 29, 2026		Print

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 76. Breezy, with a south wind 13 to 20 mph, with gusts as high as 31 mph.

    Low: 76 °F

    Mostly Cloudy
    and Breezy
    then Partly
    Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 94. Heat index values as high as 103. Breezy, with a south southwest wind 11 to 17 mph, with gusts as high as 26 mph.

    High: 94 °F

    Mostly Sunny
    and Breezy


  • Tuesday
    Night

    Tuesday Night: A 20 percent chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 75. South southwest wind 11 to 13 mph, with gusts as high as 22 mph.

    Low: 75 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 93. Heat index values as high as 100. Breezy, with a south southwest wind 11 to 17 mph, with gusts as high as 28 mph.

    High: 93 °F

    Sunny then
    Mostly Sunny
    and Breezy

  • Wednesday
    Night

    Wednesday Night: A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 75. South southwest wind 13 to 15 mph, with gusts as high as 25 mph.

    Low: 75 °F

    Chance
    T-storms


  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms, mainly before 1pm. Mostly sunny, with a high near 92. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 92 °F

    Chance
    T-storms


  • Thursday
    Night

    Thursday Night: A 50 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 73.

    Low: 73 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Friday

    Friday: A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 91.

    High: 91 °F

    Slight Chance
    T-storms


  • Friday
    Night

    Friday Night: Partly cloudy, with a low around 72.

    Low: 72 °F

    Partly Cloudy





    • Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 76. Breezy, with a south wind 13 to 20 mph, with gusts as high as 31 mph.

    Tuesday: Mostly sunny, with a high near 94. Heat index values as high as 103. Breezy, with a south southwest wind 11 to 17 mph, with gusts as high as 26 mph.

    Tuesday Night: A 20 percent chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 75. South southwest wind 11 to 13 mph, with gusts as high as 22 mph.

    Wednesday: Mostly sunny, with a high near 93. Heat index values as high as 100. Breezy, with a south southwest wind 11 to 17 mph, with gusts as high as 28 mph.

    Wednesday Night: A 40 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 75. South southwest wind 13 to 15 mph, with gusts as high as 25 mph.

    Thursday: A 30 percent chance of showers and thunderstorms, mainly before 1pm. Mostly sunny, with a high near 92. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Thursday Night: A 50 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 73.

    Friday: A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 91.

    Friday Night: Partly cloudy, with a low around 72.

    Independence Day: Mostly sunny, with a high near 92.

    Saturday Night: A 50 percent chance of showers and thunderstorms. Partly cloudy, with a low around 70.

    Sunday: A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.

    Sunday Night: Partly cloudy, with a low around 67.

    Monday: Sunny, with a high near 86.


    Altoona IA
     41.65°N 93.45°W

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