Here is the forecast for the Iowa State Fair in Des Moines for Wednesday August 13th.

NWS Mostly Sunny High 85°
WX Underground Partly Cloudy High 83°
KCCI-TV Mostly Sunny High 83°
WHO-TV Partly Cloudy High 84°
WOI-TV Partly Cloudy High 84°
Weather Channel Partly Cloudy High 85°
AccuWeather Partly Cloudy High 88°

Iowa WX Blog Forecast: Partly Cloudy High 84° Winds light and variable.