Forest Park, IL Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Forest Park, IL in one place.
Sunny, with a high near 97. Heat index values as high as 101. Northwest wind around 5 mph.
Local Weather Overview
This forecast page for Forest Park, 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: Jul 14, 2026 5:54 PM CDT.
The active forecast window currently covers Jul 15 to Jul 20, 2026 for Forest Park, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 15 to Jul 20, 2026
- Latest sync
- Jul 14, 2026 5:54 PM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Forest Park
Wednesday looks like the warmest upcoming period in Forest Park at 97 degrees F.
Sunday Night is the coolest period ahead with temperatures near 71 degrees F.
The strongest winds are forecast for Saturday at about 5 to 15 mph WSW.
Precipitation is mentioned in 8 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 14, 2026 5:54 PM CDT
- Coverage
- 6 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
Partly cloudy, with a low around 76. Heat index values as high as 99. North wind around 5 mph.
A slight chance of rain showers between 1pm and 4pm, then a slight chance of showers and thunderstorms. Mostly sunny, with a high near 93. North wind around 5 mph. Chance of precipitation is 20%.
A slight chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 75. Chance of precipitation is 20%.
A slight chance of rain showers between 7am and 10am, then a slight chance of showers and thunderstorms between 10am and 1pm, then showers and thunderstorms likely. Mostly sunny, with a high near 91.
Showers and thunderstorms likely before 7pm, then a slight chance of showers and thunderstorms between 7pm and 1am. Partly cloudy, with a low around 74.
A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 92.
A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 72.
Mostly sunny, with a high near 87.
Partly cloudy, with a low around 71.
A slight chance of showers and thunderstorms between 7am and 1pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 89.
A chance of showers and thunderstorms. Partly cloudy, with a low around 71.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Jul 15
|
Sunny
|
97°F |
5 mph
NW
|
|
Wednesday Night
Jul 15
|
Partly Cloudy
|
76°F |
5 mph
N
|
|
Thursday
Jul 16
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
93°F |
5 mph
N
|
|
Thursday Night
Jul 16
|
Slight Chance Showers And Thunderstorms then Partly Cloudy
|
75°F |
0 to 5 mph
NNE
|
|
Friday
Jul 17
|
Slight Chance Showers And Thunderstorms
|
91°F |
0 to 5 mph
S
|
|
Friday Night
Jul 17
|
Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms
|
74°F |
5 mph
SW
|
|
Saturday
Jul 18
|
Mostly Sunny then Chance Showers And Thunderstorms
|
92°F |
5 to 15 mph
WSW
|
|
Saturday Night
Jul 18
|
Chance Showers And Thunderstorms
|
72°F |
5 to 15 mph
NW
|
|
Sunday
Jul 19
|
Mostly Sunny
|
87°F |
5 to 10 mph
NE
|
|
Sunday Night
Jul 19
|
Partly Cloudy
|
71°F |
5 to 10 mph
SSW
|
|
Monday
Jul 20
|
Slight Chance Showers And Thunderstorms
|
89°F |
5 to 15 mph
WSW
|
|
Monday Night
Jul 20
|
Chance Showers And Thunderstorms
|
71°F |
10 to 15 mph
W
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Forest Park.