KCAU 9 Weather Siouxland!

Siouxlands most accurate forecast plus interactive radar are available anytime with the KCAU 9 Weather app from KCAU-TV Sioux City. From spotty spring showers to severe storms, stay ahead of the weather with the alerts and responsible forecasting from Siouxlands Weather Team. Any season, any storm, the latest weather is at your fingertips with the KCAU 9 Weather app from KCAU-TV Sioux City.