Dangerous Heat and Heavy Rainfall into the Weekend

Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >

Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

N/A

Humidity	NA
Wind Speed	NA
Barometer	NA
Dewpoint	N/A
Visibility	NA
Last update	* Not a current observation *

More Information:

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

Extended Forecast for

Zion IL

Flood Watch September 20, 02:50am until September 20, 01:00pm

Click here for hazard details and duration

Flood Watch

Flood Watch September 20, 02:50am until September 20, 01:00pm
NOW until 1:00pm Sun
Flood Watch
Overnight
Low: 64 °F
T-storms and
Areas Fog
Sunday
High: 67 °F
T-storms
Likely and
Areas Fog
then Chance
Showers and
Breezy
Sunday Night
Low: 56 °F
Breezy.
Mostly Cloudy
then Slight
Chance
Showers
Monday
High: 65 °F
Slight Chance
Showers and
Breezy
Monday Night
Low: 53 °F
Slight Chance
Showers and
Breezy
Tuesday
High: 64 °F
Partly Sunny
and Breezy
Tuesday Night
Low: 52 °F
Partly Cloudy
Wednesday
High: 64 °F
Partly Sunny

Detailed Forecast

Overnight

Showers and possibly a thunderstorm. Areas of fog. Low around 64. Northeast wind 5 to 10 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

Sunday

Showers and thunderstorms likely before 1pm, then a slight chance of showers between 1pm and 4pm. Areas of fog before 10am. Otherwise, cloudy, with a high near 67. Breezy, with a northeast wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

Sunday Night

A 20 percent chance of showers after 4am. Mostly cloudy, with a low around 56. Breezy, with an east wind around 20 mph, with gusts as high as 30 mph.

Monday

A slight chance of showers before 10am, then a slight chance of showers after 1pm. Cloudy, with a high near 65. Breezy, with an east northeast wind around 20 mph, with gusts as high as 30 mph. Chance of precipitation is 20%.

Monday Night

A 20 percent chance of showers before 1am. Mostly cloudy, with a low around 53. Breezy, with an east northeast wind 15 to 20 mph.

Tuesday

Partly sunny, with a high near 64. Breezy.

Tuesday Night

Partly cloudy, with a low around 52.

Wednesday

Partly sunny, with a high near 64.

Wednesday Night

Partly cloudy, with a low around 52.

Thursday

Mostly sunny, with a high near 65.