Weather forecast for: Altoona IA
Last Update: 5:47 pm CDT Aug 28, 2026
Tonight: Increasing clouds, with a low around 68. South southeast wind 7 to 9 mph.
Saturday: A 30 percent chance of showers and thunderstorms, mainly before 11am. Partly sunny, with a high near 86. Breezy, with a south southeast wind 10 to 17 mph, with gusts as high as 28 mph. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night: Partly cloudy, with a low around 74. South wind 11 to 13 mph, with gusts as high as 23 mph.
Sunday: A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and 1pm. Mostly sunny, with a high near 92. Heat index values as high as 100. South southwest wind 10 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Sunday Night: A 20 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 76. South southeast wind 9 to 11 mph, with gusts as high as 18 mph.
Monday: Mostly sunny, with a high near 93.
Monday Night: A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 74.
Tuesday: A 20 percent chance of showers and thunderstorms before 1pm. Partly sunny, with a high near 92.
Tuesday Night: A 30 percent chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 74.
Wednesday: Mostly sunny, with a high near 92.
Wednesday Night: Mostly clear, with a low around 74.
Thursday: Mostly sunny, with a high near 92.
Thursday Night: Partly cloudy, with a low around 73.
Friday: Mostly sunny, with a high near 90.
WeatherWorld.com
