Chicago Heights, IL Weather Forecast
Local 7-day forecast
Sunny
Track current conditions, temperature changes, wind, and the full daily outlook for Chicago Heights, IL in one place.
Sunny, with a high near 74. North wind around 10 mph, with gusts as high as 20 mph.
Local Weather Overview
This forecast page for Chicago Heights, 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 21, 2026 1:27 AM CDT.
The active forecast window currently covers Jul 22 to Jul 27, 2026 for Chicago Heights, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jul 22 to Jul 27, 2026
- Latest sync
- Jul 21, 2026 1:27 AM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Chicago Heights
Sunday looks like the warmest upcoming period in Chicago Heights at 90 degrees F.
Wednesday Night is the coolest period ahead with temperatures near 56 degrees F.
The strongest winds are forecast for Monday at about 5 to 15 mph WNW.
Precipitation is mentioned in 2 upcoming forecast periods.
Forecast Details
- Last updated
- Jul 21, 2026 1:27 AM 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
Mostly clear, with a low around 56. North wind 0 to 10 mph.
Sunny, with a high near 78.
Partly cloudy, with a low around 59.
Mostly sunny, with a high near 80.
Partly cloudy, with a low around 61.
Sunny, with a high near 85.
Mostly clear, with a low around 66.
Sunny, with a high near 90.
A chance of showers and thunderstorms between 7pm and 1am, then a slight chance of showers and thunderstorms. Mostly clear, with a low around 69.
A chance of showers and thunderstorms. Mostly sunny, with a high near 89.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Wednesday
Jul 22
|
Sunny
|
74°F |
10 mph
N
|
|
Wednesday Night
Jul 22
|
Mostly Clear
|
56°F |
0 to 10 mph
N
|
|
Thursday
Jul 23
|
Sunny
|
78°F |
0 to 5 mph
SE
|
|
Thursday Night
Jul 23
|
Partly Cloudy
|
59°F |
0 to 5 mph
SSE
|
|
Friday
Jul 24
|
Mostly Sunny
|
80°F |
0 to 5 mph
SSE
|
|
Friday Night
Jul 24
|
Partly Cloudy
|
61°F |
0 to 5 mph
SSE
|
|
Saturday
Jul 25
|
Sunny
|
85°F |
0 to 5 mph
S
|
|
Saturday Night
Jul 25
|
Mostly Clear
|
66°F |
5 mph
SSW
|
|
Sunday
Jul 26
|
Sunny
|
90°F |
5 to 10 mph
SW
|
|
Sunday Night
Jul 26
|
Chance Showers And Thunderstorms
|
69°F |
5 to 10 mph
WSW
|
|
Monday
Jul 27
|
Chance Showers And Thunderstorms
|
89°F |
5 to 15 mph
WNW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Chicago Heights.
