Chicago Heights, IL Weather Forecast
Local 7-day forecast
Areas Of Frost then Chance Rain Showers
Track current conditions, temperature changes, wind, and the full daily outlook for Chicago Heights, IL in one place.
Areas of frost before 8am, then a chance of rain showers. Mostly sunny. High near 52, with temperatures falling to around 49 in the afternoon. West wind 5 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 30%. New rainfall amounts less than a tenth 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: Apr 18, 2026 12:33 PM CDT.
The active forecast window currently covers Apr 19 to Apr 24, 2026 for Chicago Heights, IL.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Apr 19 to Apr 24, 2026
- Latest sync
- Apr 18, 2026 12:33 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 81 degrees F.
Sunday Night is the coolest period ahead with temperatures near 32 degrees F.
The strongest winds are forecast for Sunday at about 5 to 15 mph W.
Precipitation is mentioned in 6 upcoming forecast periods.
Forecast Details
- Last updated
- Apr 18, 2026 12:33 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
A chance of rain showers before 7pm, then widespread frost. Mostly clear, with a low around 32. North northwest wind 0 to 10 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
Widespread frost before 8am. Sunny, with a high near 54. East wind 0 to 5 mph, with gusts as high as 10 mph.
Mostly cloudy, with a low around 44.
Mostly sunny, with a high near 73.
A slight chance of showers and thunderstorms between 7pm and 1am. Partly cloudy, with a low around 51.
Mostly sunny, with a high near 74.
Mostly clear, with a low around 56.
Mostly sunny, with a high near 81.
A chance of rain showers after 7pm. Mostly cloudy, with a low around 61.
Rain showers likely before 1pm, then a chance of showers and thunderstorms. Mostly cloudy, with a high near 74.
A chance of showers and thunderstorms. Mostly cloudy, with a low around 47.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Sunday
Apr 19
|
Areas Of Frost then Chance Rain Showers
|
52°F |
5 to 15 mph
W
|
|
Sunday Night
Apr 19
|
Chance Rain Showers then Widespread Frost
|
32°F |
0 to 10 mph
NNW
|
|
Monday
Apr 20
|
Widespread Frost then Sunny
|
54°F |
0 to 5 mph
E
|
|
Monday Night
Apr 20
|
Mostly Cloudy
|
44°F |
5 to 15 mph
S
|
|
Tuesday
Apr 21
|
Mostly Sunny
|
73°F |
15 mph
SW
|
|
Tuesday Night
Apr 21
|
Slight Chance Showers And Thunderstorms
|
51°F |
5 to 10 mph
W
|
|
Wednesday
Apr 22
|
Mostly Sunny
|
74°F |
5 mph
N
|
|
Wednesday Night
Apr 22
|
Mostly Clear
|
56°F |
5 to 10 mph
ESE
|
|
Thursday
Apr 23
|
Mostly Sunny
|
81°F |
10 to 15 mph
S
|
|
Thursday Night
Apr 23
|
Chance Rain Showers
|
61°F |
15 mph
S
|
|
Friday
Apr 24
|
Rain Showers Likely
|
74°F |
15 mph
SSW
|
|
Friday Night
Apr 24
|
Chance Showers And Thunderstorms
|
47°F |
10 to 15 mph
WSW
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Chicago Heights.
