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.

Thunderstorm Light Rain

65°F

18°C

Humidity	90%
Wind Speed	NE 13 mph
Barometer	30.02 in (1015.9 mb)
Dewpoint	62°F (17°C)
Visibility	9.00 mi
Last update	19 Sep 3:51 am 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, 05:11am until September 19, 07:00pm

Click here for hazard details and duration

Flood Watch

Flood Watch September 19, 05:11am until September 19, 07:00pm
NOW until 7:00pm Sat
Flood Watch
Overnight
Low: 63 °F
Heavy Rain
and Breezy
Saturday
High: 68 °F
Heavy Rain
and Breezy
then Showers
Likely
Saturday Night
Low: 62 °F
Heavy Rain
Sunday
High: 65 °F
Scattered
Showers and
Windy
Sunday Night
Low: 57 °F
Mostly Cloudy
and Windy
Monday
High: 61 °F
Slight Chance
Showers and
Windy
Monday Night
Low: 54 °F
Mostly Cloudy
and Windy
Tuesday
High: 60 °F
Mostly Cloudy
and Windy

Detailed Forecast

Overnight

Showers and possibly a thunderstorm. Some of the storms could produce heavy rainfall. Low around 63. Breezy, with an east wind around 20 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

Saturday

Showers and possibly a thunderstorm before 1pm, then scattered showers and thunderstorms between 1pm and 3pm, then showers likely and possibly a thunderstorm after 3pm. Some of the storms could produce heavy rainfall. High near 68. Breezy, with a southeast wind 15 to 20 mph decreasing to 10 to 15 mph in the afternoon. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

Saturday Night

Showers and possibly a thunderstorm before 4am, then scattered showers. Some of the storms could produce heavy rainfall. Low around 62. Southeast wind 10 to 15 mph becoming north after midnight. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 inches possible.

Sunday

Scattered showers, mainly before 1pm. Mostly cloudy, with a high near 65. Windy, with a northeast wind 20 to 25 mph, with gusts as high as 30 mph. Chance of precipitation is 40%.

Sunday Night

Mostly cloudy, with a low around 57. Windy, with an east wind around 25 mph, with gusts as high as 30 mph.

Monday

A 20 percent chance of showers before 1pm. Mostly cloudy, with a high near 61. Windy, with a northeast wind around 25 mph, with gusts as high as 30 mph.

Monday Night

Mostly cloudy, with a low around 54. Windy, with a northeast wind 20 to 25 mph.

Tuesday

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. Windy.

Wednesday

Partly sunny, with a high near 61. Breezy.

Wednesday Night

Mostly cloudy, with a low around 55.

Thursday

Partly sunny, with a high near 62.