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

67°F

19°C

Humidity	79%
Wind Speed	E 9 mph
Barometer	30.14 in (1020.1 mb)
Dewpoint	60°F (16°C)
Visibility	10.00 mi
Last update	18 Sep 6:51 pm CDT

More Information:

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

Extended Forecast for

3 Miles NNE Winthrop Harbor IL

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

Click here for hazard details and duration

Flood Watch

Tonight
Low: 61 °F
Slight Chance
Showers then
Heavy Rain
and Breezy
Saturday
High: 70 °F
Heavy Rain
and Breezy
then Showers
Likely
Saturday Night
Low: 62 °F
Showers
Sunday
High: 65 °F
Showers
Likely and
Windy
Sunday Night
Low: 57 °F
Slight Chance
Showers and
Windy
Monday
High: 62 °F
Chance
Showers and
Windy
Monday Night
Low: 54 °F
Windy. Mostly
Cloudy then
Slight Chance
Showers
Tuesday
High: 60 °F
Slight Chance
Showers and
Windy
Tuesday Night
Low: 54 °F
Mostly Cloudy
and Breezy

Detailed Forecast

Tonight

A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 3am. Some of the storms could produce heavy rainfall. Low around 61. Breezy, with an east wind 15 to 20 mph. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

Saturday

Showers and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then showers likely and possibly a thunderstorm after 4pm. Some of the storms could produce heavy rainfall. High near 70. Breezy, with a southeast wind 10 to 20 mph. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.

Saturday Night

Showers and possibly a thunderstorm before 1am, then showers likely. Low around 62. East 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, mainly before 1pm. Mostly cloudy, with a high near 65. Windy, with a northeast wind 20 to 30 mph. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

Sunday Night

A 20 percent chance of showers. Cloudy, with a low around 57. Windy, with an east wind around 25 mph, with gusts as high as 30 mph.

Monday

A 30 percent chance of showers. Mostly cloudy, with a high near 62. Windy, with an east wind 25 to 30 mph.

Monday Night

A 20 percent chance of showers after 1am. Mostly cloudy, with a low around 54. Windy, with an east wind 25 to 30 mph.

Tuesday

A 20 percent chance of showers. Mostly cloudy, with a high near 60. Windy, with a northeast wind 20 to 25 mph.

Tuesday Night

Mostly cloudy, with a low around 54. Breezy.

Wednesday

Partly sunny, with a high near 61.