National Weather Service

News Headlines

Spring Seminars and Virtual Spotter Training Schedule - Oglesby, IL Seminar Rescheduled!

Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Fog

47°F

8°C

Humidity	100%
Wind Speed	NE 3 mph
Barometer	29.94 in (1013.7 mb)
Dewpoint	47°F (8°C)
Visibility	0.25 mi
Last update	16 Apr 9:51 pm CDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

McHenry IL

Flood Warning until further notice

Dense Fog Advisory April 16, 10:04pm until April 17, 10:00am

Click here for hazard details and duration

Flood Warning until further notice

Dense Fog Advisory

Flood Warning until further notice
Dense Fog Advisory April 16, 10:04pm until April 17, 10:00am
NOW: Multiple hazards in effect
Click HERE for Details
Tonight
Low: 49 °F
Fog
Friday
High: 80 °F
Fog then
Chance
T-storms and
Breezy
Friday Night
Low: 41 °F
T-storms
Saturday
High: 53 °F
Slight Chance
Showers and
Breezy
Saturday Night
Low: 32 °F
Mostly Clear
Sunday
High: 49 °F
Mostly Sunny
Sunday Night
Low: 30 °F
Partly Cloudy
then Areas
Frost
Monday
High: 57 °F
Areas Frost
then Sunny

Detailed Forecast

Tonight

Widespread fog, mainly after 11pm. Otherwise, mostly cloudy, with a low around 49. East southeast wind around 5 mph, with gusts as high as 10 mph.

Friday

A 30 percent chance of showers and thunderstorms after 4pm. Widespread fog, mainly before 8am. Otherwise, partly sunny, with a high near 80. Breezy, with a south wind 10 to 20 mph, with gusts as high as 30 mph.

Friday Night

Showers and thunderstorms before 10pm, then showers and possibly a thunderstorm, mainly after 10pm. Low around 41. South wind around 15 mph becoming west after midnight. Winds could gust as high as 25 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

Saturday

A 20 percent chance of showers before 1pm. Cloudy, then gradually becoming mostly sunny, with a high near 53. Breezy, with a west northwest wind 15 to 20 mph, with gusts as high as 30 mph.

Saturday Night

Mostly clear, with a low around 32. West northwest wind 10 to 15 mph, with gusts as high as 25 mph.

Sunday

Mostly sunny, with a high near 49.

Sunday Night

Areas of frost after midnight. Otherwise, mostly clear, with a low around 30.

Monday

Areas of frost before 9am. Otherwise, sunny, with a high near 57.

Monday Night

Partly cloudy, with a low around 45.

Tuesday

Mostly sunny, with a high near 72.