Forest Park, IL Weather Forecast
Local 7-day forecast
Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Forest Park, IL in one place.
A chance of showers and thunderstorms. Some of the storms could produce heavy rain. Mostly cloudy. Low around 65, with temperatures rising to around 68 overnight. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts between 1 and 2 inches possible.
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: Apr 15, 2026 2:39 AM CDT.
The active forecast window currently covers Apr 15 to Apr 21, 2026 for Forest Park, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 15 to Apr 21, 2026
- Latest sync
- Apr 15, 2026 2:39 AM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Forest Park
Friday looks like the warmest upcoming period in Forest Park at 76 degrees F.
Sunday Night is the coolest period ahead with temperatures near 36 degrees F.
The strongest winds are forecast for Saturday at about 15 to 20 mph SW.
Precipitation is mentioned in 8 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 15, 2026 2:39 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
A chance of showers and thunderstorms before 7am, then showers and thunderstorms. Mostly cloudy. High near 74, with temperatures falling to around 72 in the afternoon. Southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Showers and thunderstorms. Mostly cloudy, with a low around 60. South southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Showers and thunderstorms likely. Partly sunny, with a high near 72. West southwest wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 60%.
Showers and thunderstorms likely before 7pm. Partly cloudy, with a low around 51. North northeast wind 5 to 10 mph. Chance of precipitation is 60%.
Partly sunny, with a high near 76.
A chance of showers and thunderstorms between 7pm and 1am, then showers and thunderstorms. Mostly cloudy, with a low around 56.
Showers and thunderstorms. Mostly cloudy, with a high near 68.
A chance of rain showers before 1am. Partly cloudy, with a low around 37.
Mostly sunny, with a high near 52.
Mostly clear, with a low around 36.
Sunny, with a high near 56.
Mostly clear, with a low around 41.
Mostly sunny, with a high near 67.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Overnight
Apr 15
|
Chance Showers And Thunderstorms
|
65°F |
10 to 15 mph
SW
|
|
Wednesday
Apr 15
|
Chance Showers And Thunderstorms then Showers And Thunderstorms
|
74°F |
10 to 15 mph
SW
|
|
Wednesday Night
Apr 15
|
Showers And Thunderstorms
|
60°F |
10 mph
SSW
|
|
Thursday
Apr 16
|
Showers And Thunderstorms Likely
|
72°F |
10 mph
WSW
|
|
Thursday Night
Apr 16
|
Showers And Thunderstorms Likely then Partly Cloudy
|
51°F |
5 to 10 mph
NNE
|
|
Friday
Apr 17
|
Partly Sunny
|
76°F |
5 to 15 mph
SE
|
|
Friday Night
Apr 17
|
Chance Showers And Thunderstorms
|
56°F |
15 mph
S
|
|
Saturday
Apr 18
|
Showers And Thunderstorms
|
68°F |
15 to 20 mph
SW
|
|
Saturday Night
Apr 18
|
Chance Rain Showers
|
37°F |
15 mph
W
|
|
Sunday
Apr 19
|
Mostly Sunny
|
52°F |
15 to 20 mph
WNW
|
|
Sunday Night
Apr 19
|
Mostly Clear
|
36°F |
5 to 15 mph
NW
|
|
Monday
Apr 20
|
Sunny
|
56°F |
5 to 10 mph
NNE
|
|
Monday Night
Apr 20
|
Mostly Clear
|
41°F |
10 mph
SSE
|
|
Tuesday
Apr 21
|
Mostly Sunny
|
67°F |
10 to 15 mph
SSW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Forest Park.