7-Day Forecast 42.06°N 87.93°W (Text-Only)
NWS Forecast for: Mount Prospect IL
Issued by: National Weather Service Chicago, IL
Last Update: 3:11 pm CST Jan 20, 2026




This Afternoon: Partly sunny, with a high near 19. Southwest wind around 10 mph.

Tonight: Snow, mainly after 11pm. Temperature rising to around 22 by 5am. South wind around 10 mph, with gusts as high as 15 mph. Chance of precipitation is 100%. New snow accumulation of 2 to 4 inches possible.

Wednesday: Snow with a chance of flurries before 9am, then scattered flurries with isolated snow showers after 5pm. High near 27. West southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

Wednesday Night: Snow showers likely, mainly before 10pm. Patchy blowing snow between 9pm and 3am. Mostly cloudy, with a low around 12. Wind chill values as low as -1. Breezy, with a west wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New snow accumulation of less than a half inch possible.

Thursday: Mostly sunny, with a high near 21. West wind 10 to 15 mph, with gusts as high as 25 mph.

Thursday Night: Partly cloudy, with a low around -8.

Friday: Mostly sunny and cold, with a high near -1.

Friday Night: Mostly cloudy, with a low around -8.

Saturday: Mostly cloudy and cold, with a high near 8.

Saturday Night: Mostly cloudy, with a low around 2.

Sunday: Partly sunny, with a high near 15.

Sunday Night: Mostly cloudy, with a low around 1.

Monday: Mostly sunny, with a high near 16.



Mount Prospect IL
 42.06°N 87.93°W

Visit your local NWS office at: https://www.weather.gov/lot