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Chicago Heights, IL Weather
Current conditions
Observed at Lansing Municipal Airport · 56 min ago
Forecast
10-day-
Tonight
Mostly clear, with a low around 44. East wind around 0 mph.
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Tuesday
Sunny. High near 69, with temperatures falling to around 66 in the afternoon. Northeast wind 0 to 5 mph.
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Tuesday Night
Mostly clear, with a low around 44. East southeast wind 0 to 5 mph.
National Weather Service forecast updated 6 hrs ago.
Hourly
Hourly forecast- Now48°
- 2 AM47°
- 3 AM46°
- 4 AM45°
- 5 AM44°
- 6 AM44°
- 7 AM44°
- 8 AM46°
- 9 AM50°
- 10 AM57°
- 11 AM61°
- 12 PM65°
- 1 PM67°
- 2 PM68°
- 3 PM69°
- 4 PM68°
- 5 PM66°
- 6 PM63°
- 7 PM58°
- 8 PM56°
- 9 PM54°
- 10 PM53°
- 11 PM52°
- Wed12 AM50°
10-day forecast
Details- TonightOct 19Mostly Clear44°
- TodayOct 20Sunny44°69°
- WedOct 21Sunny48°70°
- ThuOct 22Sunny48°71°
- FriOct 23Sunny48°70°
- SatOct 24Mostly Sunny52°70°
- SunOct 25Partly Sunny53°72°
- MonOct 26Partly Sunny68°
- TueOct 27Light rain0.13 in45°55°
- WedOct 28Cloudy0.02 in39°49°
Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.
Radar
Full mapWeather news in Illinois
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Air quality
Acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.
Forecast
- TueModerate
- WedModerate
Hammond-Gary, IN reporting area · 51 min ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.
Sun & moon
Nearby
- Chicago 38 km
- Joliet 37 km
- Naperville 53 km
- Cicero 39 km
- Hammond 14 km
- Gary 26 km
- Evanston 60 km
- Bolingbrook 42 km
- Skokie 59 km
- Orland Park 23 km
- Tinley Park 14 km
- Oak Lawn 25 km
Forecasters' discussion
From the National Weather Service office in LOT, issued 1 hr ago
Key Messages
- Shallow fog may develop in northeastern Illinois early Tuesday morning. Any fog would dissipate a few hours after sunrise.
- An extended period of dry and above to much above average temperatures is expected through the next 7 days.
Discussion
Issued at 1223 PM CDT Mon Oct 19 2026
The only item of note is a threat for shallow fog overnight into tomorrow morning near Lake Michigan where a modestly more moist environment will advect inland. Otherwise, no significant weather is expected the next 7 days with above to much above average temperatures each day. Generally light winds should allow weak lake breezes to form each of the next several afternoons, but probably only result in slightly cooler conditions right near the lake. Other than a bit of mid-high level cloudiness this afternoon, much of the week looks to be mostly sunny.
- Izzi/Borchardt
Aviation
Issued at 1230 AM CDT Tue Oct 20 2026
Key Aviation Messages for the current TAF period:
- Patchy fog possible around sunrise.
Winds are expected to be light and variable, if not outright calm through the overnight. There is a chance for patchy fog toward daybreak for Chicago terminals, with better chances closer to the lake. There is still uncertainty with how low visibilities will go, but will be monitored through the night. But the expectation is that any fog that does form should dissipate after sunrise for a return to VFR.
Light winds will prevail through the day, mostly out of the east. There is another chance for patchy fog tomorrow morning. Given there is little change to the overall weather pattern tomorrow, would like to see how this morning plays out first before adding fog to the TAFs for Wednesday morning.
DK
Lot Watches
IL...None. IN...None. LM...None.
Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Search index and reflects what the press published. Terms of use.