Mount Prospect, IL Weather Forecast
Local 7-day forecast
Showers And Thunderstorms Likely
Track current conditions, temperature changes, wind, and the full daily outlook for Mount Prospect, IL in one place.
Showers and thunderstorms likely. Cloudy. Low around 63, with temperatures rising to around 67 overnight. Southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Local Weather Overview
This forecast page for Mount Prospect, IL is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Apr 15, 2026 5:15 AM CDT.
The active forecast window currently covers Apr 15 to Apr 21, 2026 for Mount Prospect, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 15 to Apr 21, 2026
- Latest sync
- Apr 15, 2026 5:15 AM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Mount Prospect
Friday looks like the warmest upcoming period in Mount Prospect at 77 degrees F.
Sunday Night is the coolest period ahead with temperatures near 35 degrees F.
The strongest winds are forecast for Saturday at about 15 to 20 mph WSW.
Precipitation is mentioned in 8 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 15, 2026 5:15 AM CDT
- Coverage
- 7 days
- Time zone
- America/Chicago
- Forecast office
- LOT
- Radar station
- KLOT
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Showers and thunderstorms likely before 10am, then showers and thunderstorms likely between 10am and 11am, then a chance of showers and thunderstorms between 11am and 3pm, then showers and thunderstorms likely between 3pm and 4pm, then showers and thunderstorms likely. Cloudy, with a high near 74. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts between a half and three quarters of an inch possible.
Showers and thunderstorms likely before 10pm, then showers and thunderstorms between 10pm and 4am, then a chance of showers and thunderstorms. Cloudy, with a low around 60. South southwest wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.
A chance of showers and thunderstorms before 7am, then showers and thunderstorms likely. Mostly cloudy, with a high near 69. West southwest wind 5 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Showers and thunderstorms likely before 7pm. Mostly cloudy, with a low around 51. East northeast wind 5 to 10 mph. Chance of precipitation is 60%.
Partly sunny, with a high near 77.
Showers and thunderstorms after 7pm. Mostly cloudy, with a low around 52.
Showers and thunderstorms. Partly sunny, with a high near 64.
A chance of rain showers before 1am. Partly cloudy, with a low around 36.
Mostly sunny, with a high near 52.
Partly cloudy, with a low around 35.
Sunny, with a high near 60.
Partly cloudy, with a low around 47.
Mostly sunny, with a high near 70.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Apr 15
|
Showers And Thunderstorms Likely
|
63°F |
10 mph
SW
|
|
Wednesday
Apr 15
|
Showers And Thunderstorms Likely
|
74°F |
10 to 15 mph
SW
|
|
Wednesday Night
Apr 15
|
Showers And Thunderstorms Likely then Showers And Thunderstorms
|
60°F |
10 mph
SSW
|
|
Thursday
Apr 16
|
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
|
69°F |
5 to 10 mph
WSW
|
|
Thursday Night
Apr 16
|
Showers And Thunderstorms Likely then Mostly Cloudy
|
51°F |
5 to 10 mph
ENE
|
|
Friday
Apr 17
|
Partly Sunny
|
77°F |
5 to 15 mph
SSE
|
|
Friday Night
Apr 17
|
Showers And Thunderstorms
|
52°F |
15 mph
S
|
|
Saturday
Apr 18
|
Showers And Thunderstorms
|
64°F |
15 to 20 mph
WSW
|
|
Saturday Night
Apr 18
|
Chance Rain Showers
|
36°F |
15 mph
W
|
|
Sunday
Apr 19
|
Mostly Sunny
|
52°F |
15 mph
WNW
|
|
Sunday Night
Apr 19
|
Partly Cloudy
|
35°F |
5 to 15 mph
NW
|
|
Monday
Apr 20
|
Sunny
|
60°F |
5 to 10 mph
WSW
|
|
Monday Night
Apr 20
|
Partly Cloudy
|
47°F |
10 mph
SSW
|
|
Tuesday
Apr 21
|
Mostly Sunny
|
70°F |
10 to 15 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Mount Prospect.
