Here is the forecast for the Iowa State Fair in Des Moines for Saturday.
NWS Partly Cloudy High: 83°
WX Underground AM Thunderstorms, then Partly Cloudy High:83°
KCCI-TV Not available (The site wasn’t working right)
WHO-TV Partly Cloudy High: 84°
WOI-TV AM Thunderstorms mainly NE of Des Moines otherwise Partly Cloudy High: 83°
Weather Channel Isolated Thunderstorms High: 83°
Accuweather Partly Cloudy High: 85°

Iowa WX Blog’s Forecast. Some thunderstorms in the morning mainly NE of Des Moines otherwise becoming partly cloudy in the afternoon. High 83° South Wind around 5-10 mph.