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Village of Mount Prospect, ILMount Prospect, IL Weather Forecast
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Mount Prospect Weather Forecast
| THIS AFTERNOON | TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
 |  |  |  | | | |  |  | | | |
| Partly Cloudy | Partly Cloudy | Mostly Cloudy | Mostly Cloudy | Mostly Cloudy | Mostly Cloudy | Clearing | Chance of T-Storm | Chance of Showers | Partly Cloudy | Partly Cloudy | Mostly Cloudy |
| Hi: 71°FHi: 22°C | Lo: 51°FLo: 11°C | Hi: 61°FHi: 16°C | Lo: 49°FLo: 9°C | Hi: 69°FHi: 21°C | Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C | Lo: 55°FLo: 13°C | Hi: 71°FHi: 22°C | Lo: 51°FLo: 11°C | Hi: 71°FHi: 22°C | Lo: 59°FLo: 15°C |
| POP: 20% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 1221 PM CDT Sun Oct 25 2026 
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Issued: 1229 PM CDT Sun Oct 25 2026
Key Messages
- A cold front will move across the area tonight leading to low clouds and cooler temperatures tomorrow, especially north of Interstate 80.
- The relative cool down will be short-lived as high temperatures rebound to the low to mid 70s by the middle of the week.
- A pattern change toward more opportunities for regular rainfall is set to occur toward the end of the week and into the first week of November.
Discussion
... Issued at 1229 PM CDT Sun Oct 25 2026
The upper-level pattern remains ben...