Oak Brook, IL Weather Forecast
Local 7-day forecast
Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Oak Brook, IL in one place.
Showers and thunderstorms. Partly sunny, with a high near 65.
Local Weather Overview
This forecast page for Oak Brook, 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 3:59 AM CDT.
The active forecast window currently covers Apr 18 to Apr 21, 2026 for Oak Brook, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 18 to Apr 21, 2026
- Latest sync
- Apr 15, 2026 3:59 AM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Oak Brook
Tuesday looks like the warmest upcoming period in Oak Brook at 71 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 2 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 15, 2026 3:59 AM CDT
- Coverage
- 4 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 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 48.
Mostly sunny, with a high near 71.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Saturday
Apr 18
|
Showers And Thunderstorms
|
65°F |
15 to 20 mph
WSW
|
|
Saturday Night
Apr 18
|
Chance Rain Showers
|
36°F |
10 to 15 mph
W
|
|
Sunday
Apr 19
|
Mostly Sunny
|
52°F |
10 to 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
SW
|
|
Monday Night
Apr 20
|
Partly Cloudy
|
48°F |
10 mph
S
|
|
Tuesday
Apr 21
|
Mostly Sunny
|
71°F |
10 to 15 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Oak Brook.
