Illinois · NWS LOT office
Waukegan, IL weather
It is 54°F and clear at Chicago/Waukegan Regional Airport as of Oct 28, 4:05 AM CDT. Overnight: Mostly Clear, low near 50°F, 1% chance of precipitation. Forecast from the National Weather Service, issued Oct 28, 3:35 AM CDT.
Current conditions
Temperature
54°F
Clear
Wind
SW 7 mph
Humidity 82% · dew point 48°F
Pressure · visibility
30.18 inHg
Visibility 10 mi
Observed at Chicago/Waukegan Regional Airport (KUGN), Oct 28, 4:05 AM CDT. Station readings can lag or be missing.
Alerts for this area
No active NWS alerts cover the Waukegan forecast zone right now.
Around the NWS LOT forecast area
No active alerts in zones served by the LOT office near Waukegan.
From the alert snapshot of Oct 28, 2026, 5:12 AM EDT. No alerts are active anywhere in Illinois.
For official warnings, check weather.gov and your local authorities. OpenForecast repeats National Weather Service alerts and may be delayed or incomplete. Follow instructions from emergency officials.
Next 24 hours
| Time | Temp | Forecast | Precip. chance | Wind |
|---|---|---|---|---|
| Wed 6 AM | 52°F | Sunny | 1% | SSW 5 mph |
| Wed 7 AM | 51°F | Sunny | 0% | SW 5 mph |
| Wed 8 AM | 53°F | Sunny | 0% | SSW 5 mph |
| Wed 9 AM | 58°F | Sunny | 0% | SSW 5 mph |
| Wed 10 AM | 62°F | Sunny | 0% | SSW 10 mph |
| Wed 11 AM | 66°F | Sunny | 0% | SSW 10 mph |
| Wed 12 PM | 69°F | Sunny | 0% | SSW 10 mph |
| Wed 1 PM | 71°F | Sunny | 0% | S 10 mph |
| Wed 2 PM | 73°F | Sunny | 0% | S 15 mph |
| Wed 3 PM | 73°F | Sunny | 0% | S 15 mph |
| Wed 4 PM | 72°F | Sunny | 0% | S 15 mph |
| Wed 5 PM | 71°F | Sunny | 0% | S 10 mph |
| Wed 6 PM | 68°F | Mostly Clear | 0% | S 10 mph |
| Wed 7 PM | 65°F | Mostly Clear | 0% | S 10 mph |
| Wed 8 PM | 65°F | Mostly Clear | 0% | S 10 mph |
| Wed 9 PM | 64°F | Mostly Clear | 0% | S 10 mph |
| Wed 10 PM | 64°F | Mostly Clear | 0% | S 15 mph |
| Wed 11 PM | 63°F | Mostly Clear | 1% | S 15 mph |
| Thu 12 AM | 63°F | Partly Cloudy | 1% | SSW 15 mph |
| Thu 1 AM | 63°F | Chance Rain Showers | 33% | SSW 15 mph |
| Thu 2 AM | 63°F | Chance Rain Showers | 33% | SSW 15 mph |
| Thu 3 AM | 62°F | Chance Rain Showers | 33% | SSW 15 mph |
| Thu 4 AM | 62°F | Chance Rain Showers | 33% | SW 15 mph |
| Thu 5 AM | 62°F | Chance Rain Showers | 33% | SW 15 mph |
Hourly values come from the NWS gridded forecast for the 2.5 km grid square that covers the city's center point. Conditions elsewhere in Waukegan can differ.
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7-day forecast
Overnight
Low 50°F
Mostly clear. Low around 50, with temperatures rising to around 52 overnight. South southwest wind around 5 mph.
Wednesday
High 72°F·Low 58°F
Sunny. High near 72, with temperatures falling to around 69 in the afternoon. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Wednesday Night: A chance of rain showers after 3am. Partly cloudy, with a low around 58. South southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.
Thursday
High 68°F·Low 44°F
A chance of rain showers before 9am. Mostly sunny, with a high near 68. West wind 10 to 15 mph. Chance of precipitation is 30%.
Thursday Night: Mostly clear, with a low around 44. North northwest wind around 5 mph.
Friday
High 59°F·Low 50°F
Partly sunny, with a high near 59.
Friday Night: A slight chance of rain showers after 7pm. Cloudy, with a low around 50.
Saturday
High 59°F·Low 49°F
A chance of rain showers. Mostly cloudy, with a high near 59.
Saturday Night: A chance of rain showers. Cloudy, with a low around 49.
Sunday
High 65°F·Low 50°F
A chance of rain showers. Mostly cloudy, with a high near 65.
Sunday Night: A chance of rain showers. Mostly cloudy, with a low around 50.
Monday
High 65°F·Low 51°F
A chance of rain showers. Mostly cloudy, with a high near 65.
Monday Night: A chance of rain showers. Mostly cloudy, with a low around 51.
Tuesday
High 64°F
Rain showers likely. Mostly cloudy, with a high near 64.
Nearby cities
- Gurnee, IL 3 mi
- North Chicago, IL 4 mi
- Zion, IL 6 mi
- Libertyville, IL 8 mi
- Grayslake, IL 9 mi
- Mundelein, IL 10 mi
- Vernon Hills, IL 10 mi
- Round Lake Beach, IL 11 mi
Larger cities in the area
- Chicago, IL 38 mi · pop. 2,721,308
- Aurora, IL 47 mi · pop. 180,710
- Milwaukee, WI 48 mi · pop. 563,531
- Madison, WI 93 mi · pop. 285,300
Other cities in Lake County
- Buffalo Grove
- Mundelein
- Highland Park
- North Chicago
- Gurnee
- Round Lake Beach
- Vernon Hills
- Zion
- Grayslake
- Libertyville
See every city we cover in Illinois, or check all active alerts.
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About this forecast
- Forecast office
- Waukegan is served by the National Weather Service LOT forecast office, forecast zone ILZ006, county zone ILC097.
- Location used
- The Census Bureau's internal point for Waukegan (42.3694, -87.8709), in Lake County. Population: 88,570 (2024 estimate), number 10 of the 121 Illinois cities on this site.
- Radar
- Nearest NWS radar: KMKX. View it on radar.weather.gov.
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Sources
- Forecast, hourly forecast, observations and alerts: National Weather Service API, api.weather.gov/points/42.3694,-87.8709 (forecast issued Oct 28, 3:35 AM CDT).
- Official forecast page: forecast.weather.gov.
- City location and population: U.S. Census Bureau, Vintage 2024 population estimates and 2024 Gazetteer files.
- Snapshot taken Oct 28, 2026. The NWS and Census Bureau do not endorse OpenForecast.
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