Chicago Heights, IL Weather Forecast
Local 7-day forecast
Mostly Sunny then Slight Chance Showers And Thunderstorms
Track current conditions, temperature changes, wind, and the full daily outlook for Chicago Heights, IL in one place.
A slight chance of showers and thunderstorms between noon and 1pm, then a chance of showers and thunderstorms. Mostly sunny. High near 87, with temperatures falling to around 83 in the afternoon. West northwest wind 5 to 10 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible.
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: Jun 6, 2026 12:22 PM CDT.
The active forecast window currently covers Jun 6 to Jun 12, 2026 for Chicago Heights, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Jun 6 to Jun 12, 2026
- Latest sync
- Jun 6, 2026 12:22 PM CDT
- Forecast office
- LOT
- Source
- NOAA / NWS
Daily Outlook
This Week in Chicago Heights
Thursday looks like the warmest upcoming period in Chicago Heights at 93 degrees F.
Tonight is the coolest period ahead with temperatures near 66 degrees F.
The strongest winds are forecast for Monday at about 10 to 15 mph SE.
Precipitation is mentioned in 14 upcoming forecast periods.
Forecast Details
- Last updated
- Jun 6, 2026 12:22 PM 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 9pm, then a slight chance of showers and thunderstorms between 9pm and 1am. Mostly cloudy, with a low around 66. East northeast wind around 5 mph, with gusts as high as 15 mph. Chance of precipitation is 30%. New rainfall amounts between a quarter and half of an inch possible.
A chance of showers and thunderstorms after 1pm. Mostly cloudy. High near 83, with temperatures falling to around 81 in the afternoon. East wind 5 to 10 mph. Chance of precipitation is 30%.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. East wind 5 to 10 mph. Chance of precipitation is 40%.
A chance of showers and thunderstorms before 1pm, then showers and thunderstorms. Mostly cloudy, with a high near 83. Southeast wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%.
Showers and thunderstorms. Mostly cloudy, with a low around 67. Chance of precipitation is 80%.
Showers and thunderstorms likely before 7am, then a chance of showers and thunderstorms. Partly sunny, with a high near 87.
A chance of showers and thunderstorms. Partly cloudy, with a low around 69.
A chance of showers and thunderstorms before 1pm. Mostly sunny, with a high near 92.
A slight chance of showers and thunderstorms after 1am. Mostly clear, with a low around 73.
A slight chance of showers and thunderstorms. Sunny, with a high near 93.
A chance of showers and thunderstorms. Partly cloudy, with a low around 71.
A chance of showers and thunderstorms. Mostly sunny, with a high near 91.
A chance of showers and thunderstorms before 7pm, then a chance of showers and thunderstorms. Partly cloudy, with a low around 68.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Today
Jun 6
|
Mostly Sunny then Slight Chance Showers And Thunderstorms
|
87°F |
5 to 10 mph
WNW
|
|
Tonight
Jun 6
|
Chance Showers And Thunderstorms then Slight Chance Showers And Thunderstorms
|
66°F |
5 mph
ENE
|
|
Sunday
Jun 7
|
Mostly Cloudy then Chance Showers And Thunderstorms
|
83°F |
5 to 10 mph
E
|
|
Sunday Night
Jun 7
|
Chance Showers And Thunderstorms
|
66°F |
5 to 10 mph
E
|
|
Monday
Jun 8
|
Chance Showers And Thunderstorms
|
83°F |
10 to 15 mph
SE
|
|
Monday Night
Jun 8
|
Showers And Thunderstorms
|
67°F |
5 to 10 mph
S
|
|
Tuesday
Jun 9
|
Showers And Thunderstorms Likely then Chance Showers And Thunderstorms
|
87°F |
5 to 10 mph
SW
|
|
Tuesday Night
Jun 9
|
Chance Showers And Thunderstorms
|
69°F |
5 mph
SW
|
|
Wednesday
Jun 10
|
Chance Showers And Thunderstorms
|
92°F |
5 to 10 mph
SSW
|
|
Wednesday Night
Jun 10
|
Mostly Clear then Slight Chance Showers And Thunderstorms
|
73°F |
10 mph
SSW
|
|
Thursday
Jun 11
|
Slight Chance Showers And Thunderstorms
|
93°F |
10 to 15 mph
SW
|
|
Thursday Night
Jun 11
|
Chance Showers And Thunderstorms
|
71°F |
5 to 10 mph
SW
|
|
Friday
Jun 12
|
Chance Showers And Thunderstorms
|
91°F |
5 to 10 mph
WSW
|
|
Friday Night
Jun 12
|
Chance Showers And Thunderstorms
|
68°F |
5 to 10 mph
SW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Chicago Heights.
