Weather forecast for: Mount Prospect IL
Last Update: 9:20 am CDT Oct 27, 2026
This Afternoon: Mostly cloudy, with a high near 68. South southeast wind around 10 mph.
Tonight: Mostly cloudy, with a low around 52. South wind around 5 mph.
Wednesday: Mostly sunny, with a high near 73. South wind 5 to 10 mph, with gusts as high as 15 mph.
Wednesday Night: Partly cloudy, with a low around 58. South wind around 10 mph, with gusts as high as 20 mph.
Thursday: A 30 percent chance of showers. Partly sunny, with a high near 72. Southwest wind around 10 mph, with gusts as high as 20 mph.
Thursday Night: Mostly cloudy, with a low around 50.
Friday: A 30 percent chance of showers after 1pm. Partly sunny, with a high near 68.
Friday Night: A chance of showers. Cloudy, with a low around 53.
Saturday: A chance of showers before 1pm. Cloudy, with a high near 70.
Saturday Night: A chance of showers. Mostly cloudy, with a low around 54.
Sunday: A chance of showers. Mostly cloudy, with a high near 70.
Sunday Night: A chance of showers. Mostly cloudy, with a low around 55.
Monday: Showers likely. Mostly cloudy, with a high near 68.