Excessive Rainfall Potential for the Southeast; Heat Expands for Center of the Nation; Critical Fire Weather for Pacific Northwest

Flash flooding threatens areas from the Tennessee Valley to the Carolinas as storms repeat along a stalled front. Monsoonal storms may trigger flooding in the Southwest. Dangerous heat expands across the Desert Southwest, Plains, mid-Mississippi Valley and Southern Tier. Critical fire weather for interior Pacific Northwest. Cooler, drier air brings brief relief to the Great Lakes and Northeast. Read More >

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43° N Lon: 87.86° W Elev: 709 ft.

Overcast

74°F

23°C

Humidity 85%
Wind Speed SW 9 mph
Barometer 29.95 in (1012.8 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Last update 25 Jul 11:51 pm CDT
Detailed forecast for

Lake County

Overnight
Mostly cloudy. Near steady temperature in the lower 70s. Southwest winds around 5 mph.
Sunday
Mostly cloudy in the morning, then becoming partly cloudy. Humid with highs in the upper 80s. Southwest winds around 5 mph, increasing to around 10 mph in the afternoon.
Sunday Night
Mostly cloudy. A slight chance of showers and thunderstorms early in the evening, then a chance of showers and thunderstorms in the late evening and overnight. Humid with lows in the mid 70s. Southwest winds 5 to 10 mph. Chance of precipitation 50 percent.
Monday
Partly cloudy. A chance of showers and thunderstorms. Humid with highs around 90. Southwest winds 5 to 10 mph, increasing to west 10 to 15 mph in the afternoon. Chance of precipitation 50 percent. Heat index values up to 102.
Monday Night
Partly cloudy. A chance of showers and thunderstorms in the evening. Humid with lows in the upper 60s. West winds 5 to 10 mph, becoming northwest after midnight. Chance of precipitation 30 percent.
Tuesday
Partly cloudy in the morning, then clearing. Highs in the lower 80s.
Tuesday Night
Clear. Lows in the lower 60s.
Wednesday
Mostly sunny. Highs in the lower 80s inland, but only in the upper 70s near the lake.
Wednesday Night
Mostly clear. Lows in the lower 60s.
Thursday
Mostly sunny in the morning, then becoming partly cloudy. Highs in the mid 80s.
Thursday Night
Partly cloudy in the evening, then becoming mostly cloudy. Lows in the mid 60s.
Friday
Mostly cloudy in the morning, then becoming partly cloudy. Highs in the mid 80s.
Friday Night
Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers in the evening. Lows in the mid 60s. Chance of precipitation 30 percent.
Saturday
Partly cloudy. Highs in the mid 80s.



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1156 PM CDT Sat Jul 25 2026
 
 

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database