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Waukegan, IL Weather
Current conditions
Forecast for this hour (no station report in the last two hours)
Forecast
10-day-
Tonight
Partly cloudy, with a low around 48. East northeast wind around 0 mph.
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Tuesday
Mostly sunny. High near 64, with temperatures falling to around 59 in the afternoon. East northeast wind 0 to 5 mph.
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Tuesday Night
Partly cloudy, with a low around 47. South wind 0 to 5 mph.
National Weather Service forecast updated 5 hrs ago.
Hourly
Hourly forecast- Now50°
- 1 AM50°
- 2 AM50°
- 3 AM49°
- 4 AM48°
- 5 AM48°
- 6 AM48°
- 7 AM48°
- 8 AM49°
- 9 AM53°
- 10 AM58°
- 11 AM61°
- 12 PM62°
- 1 PM63°
- 2 PM63°
- 3 PM62°
- 4 PM62°
- 5 PM59°
- 6 PM57°
- 7 PM54°
- 8 PM54°
- 9 PM53°
- 10 PM52°
- 11 PM52°
10-day forecast
Details- TonightOct 19Partly Cloudy48°
- TodayOct 20Mostly Sunny47°64°
- WedOct 21Sunny49°67°
- ThuOct 22Sunny52°67°
- FriOct 23Sunny51°65°
- SatOct 24Mostly Sunny53°65°
- SunOct 25Partly Sunny51°67°
- MonOct 26Partly Sunny63°
- TueOct 27Showers0.17 in45°52°
- WedOct 28Cloudy41°51°
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
More weather news-
A great week ahead for Central IllinoisWAND DECATUR, Ill. (WAND) – A wonderful weekend across Central Illinois carries into the start of the workweek. Overnight lows dip back into the upper 30s tonight with a small risk for patchy frost, though coverage will…
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Sunshine, chilly mornings and a big warm-up ahead for central IllinoisCENTRAL ILLINOIS (25News Now) - Fall is making an appearance across central Illinois this weekend, but don’t get too comfortable with the chilly temperatures. After a cold start on Sunday morning, sunshine will help…
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Overnight Frost Advisory for parts of Illinois, NW IndianaCBS News Colorado 10pm Saturday CBS News Detroit Weekend 11pm CBS News Los Angeles Weekend 9pm CBS News Philadelphia Weekend 11pm KDKA News Weekend 11pm CBS News Texas Weekend 10pm
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Frost advisory back in effect for Central IllinoisWAND DECATUR, Ill. (WAND) – Another cool day starts the weekend across Central Illinois with highs Saturday only reaching the upper 50s under plenty of sunny skies. Strong high pressure remains in control keeping skies…
- Illinois Winter Weather: First Snow Before Thanksgiving, Nov. 26?
Chicago, IL – Illinois residents wondering when the first measurable snowfall of the 2026 winter season might arrive could see dramatically different conditions depending on where they live. While Chicago typically…
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Frosty Nights Ahead Before a Warm-Up Arrives in Central IllinoisCENTRAL ILLINOIS (25News Now) - Central Illinois is in for a chilly weekend, with temperatures dropping into the 30s and frost possible overnight. But after a cool start to the weekend, a warming trend will bring…
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Dangerous Freeze Warnings Issued for Iowa, Wisconsin, Minnesota and Illinois as Temperatures DropFreeze Warnings take effect early Saturday across much of Iowa, Wisconsin, southeast and central Minnesota and northern Illinois, with lows as cold as 26 degrees expected. Seven National Weather Service offices issued…
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Frost advisory in effect for West Central Illinois; cool to start the weekendWAND DECATUR, Ill. (WAND) – Significantly cooler weather wraps up the work week behind the latest cold front with temperatures nearly 20 degrees below Thursday’s highs. Cloud cover remains through the day before skies…
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Community leaders say foiled Illinois mass shooting was result of surge in anti-Hindu hate onlineMostly cloudy with scattered thunderstorms (some with damaging wind gust potential) through early evening, then brisk and drier as it turns much cooler the rest of the night. . Bulletin: SEVERE THUNDERSTORM WATCH 686…
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A very different day ahead for Central IllinoisDECATUR, Ill. (WAND) – Chilly and Windy Friday Expect cloudy skies to dominate most of Friday with northwest winds gusting between 30 and 40 mph. These winds will keep temperatures from warming much at all, holding…
Air quality
Air quality is satisfactory, and air pollution poses little or no risk.
Forecast
- TueModerate
- WedModerate
- ThuModerate
Lake County, IL reporting area · 44 min ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.
Sun & moon
Nearby
- Chicago 59 km
- Elgin 51 km
- Kenosha 25 km
- Cicero 58 km
- Racine 41 km
- Arlington Heights 33 km
- Evanston 38 km
- Schaumburg 42 km
- Palatine 32 km
- Skokie 38 km
- Des Plaines 37 km
- Berwyn 57 km
Forecasters' discussion
From the National Weather Service office in LOT, issued 6 hrs 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 615 PM CDT Mon Oct 19 2026
Light and variable winds (at times prevailing out of the east) will prevail through the TAF period. Shallow ground fog may develop in the vicinity of ORD/MDW early tomorrow morning (08-13Z timeframe). We have maintained the targeted TEMPO group for 1 1/2SM BR introduced in the 18z tafs. Otherwise, there are no aviation concerns through the TAF period.
KJB/Borchardt
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.