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.

Overcast

68°F

20°C

Humidity	81%
Wind Speed	E 12 G 20 mph
Barometer	30.08 in (1017.7 mb)
Dewpoint	62°F (17°C)
Visibility	10.00 mi
Last update	18 Sep 11:51 pm CDT

More Information:

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

Extended Forecast for

2 Miles SE Winthrop Harbor IL

Flood Watch September 19, 04:00am until September 19, 01:00pm

Click here for hazard details and duration

Flood Watch

Overnight
Low: 61 °F
Heavy Rain
and Breezy
Saturday
High: 73 °F
Breezy. Heavy
Rain then
T-storms
Likely
Saturday Night
Low: 62 °F
T-storms
Sunday
High: 67 °F
Showers
Likely and
Breezy
Sunday Night
Low: 55 °F
Slight Chance
Showers and
Breezy
Monday
High: 66 °F
Chance
Showers and
Breezy
Monday Night
Low: 53 °F
Mostly Cloudy
then Slight
Chance
Showers
Tuesday
High: 64 °F
Mostly Cloudy
Tuesday Night
Low: 53 °F
Mostly Cloudy

Detailed Forecast

Overnight

Showers and thunderstorms likely, then showers and possibly a thunderstorm after 5am. Some of the storms could produce heavy rainfall. Low around 61. Breezy, with an east southeast wind around 20 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

Saturday

Showers and thunderstorms, mainly before 1pm. Some of the storms could produce heavy rainfall. High near 73. Breezy, with a southeast wind 15 to 20 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

Saturday Night

Showers and thunderstorms likely, then showers and possibly a thunderstorm after 10pm. Low around 62. East southeast wind 10 to 15 mph becoming north after midnight. Chance of precipitation is 80%. New rainfall amounts between 1 and 2 inches possible.

Sunday

Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 67. Breezy, with a northeast wind 20 to 25 mph, with gusts as high as 30 mph. Chance of precipitation is 60%.

Sunday Night

A 20 percent chance of showers. Cloudy, with a low around 55. Breezy, with an east northeast wind 20 to 25 mph.

Monday

A 30 percent chance of showers. Cloudy, with a high near 66. Breezy.

Monday Night

A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 53.

Tuesday

Mostly cloudy, with a high near 64.

Tuesday Night

Mostly cloudy, with a low around 53.

Wednesday

Partly sunny, with a high near 65.