Posted in Web Mount Prospect, IL Weather Forecast | AccuWeather August 9, 2024 Current Weather. 5:24 AM. 69° F. RealFeel® 68°. Partly cloudy More Details. Wind NNE 3 mph. Wind Gusts 9 mph. Air Quality Excellent. https://www.accuweather.com/en/us/mount-prospect/60056/weather-forecast/338002