Excessive Rainfall and Significant Flooding in the Upper Midwest This Weekend

Heavy to excessive rainfall is expected over the weekend across eastern Iowa, northern Missouri, northwest Illinois and southern Wisconsin. Numerous flash floods, some with significant impacts, are expected in these areas. Heaviest rainfall will occur overnight Saturday and Sunday, so be sure to have multiple ways to receive warnings. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Lewis University Airport (KLOT)

Lat: 41.6°NLon: 88.1°WElev: 669ft.

Fair

90°F

32°C

Humidity	59%
Wind Speed	S 17 G 23 mph
Barometer	30.06 in
Dewpoint	73°F (23°C)
Visibility	10.00 mi
Heat Index	99°F (37°C)
Last update	9 Aug 11:54 am CDT

More Information:

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

Extended Forecast for

2 Miles NW Chicago/Romeoville, Lewis University Airport IL

This Afternoon
High: 91 °F
Sunny
Tonight
Low: 73 °F
Slight Chance
T-storms
Sunday
High: 89 °F
Chance
T-storms
Sunday Night
Low: 72 °F
Chance
T-storms
Monday
High: 86 °F
Showers
Likely
Monday Night
Low: 70 °F
Chance
T-storms
Tuesday
High: 86 °F
Chance
Showers then
Chance
T-storms
Tuesday Night
Low: 68 °F
Mostly Cloudy
Wednesday
High: 86 °F
Mostly Sunny
then Chance
T-storms

Detailed Forecast

This Afternoon

Sunny, with a high near 91. Heat index values as high as 99. South southwest wind around 15 mph, with gusts as high as 25 mph.

Tonight

A slight chance of showers and thunderstorms before 1am, then a slight chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 73. South wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 20%.

Sunday

A 40 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 89. Heat index values as high as 98. South southwest wind around 10 mph, with gusts as high as 20 mph.

Sunday Night

A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72. South wind 5 to 10 mph.

Monday

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 86. South southwest wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 60%.

Monday Night

A 50 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 70.

Tuesday

A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 86.

Tuesday Night

Mostly cloudy, with a low around 68.

Wednesday

A chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 86.

Wednesday Night

Mostly cloudy, with a low around 68.

Thursday

A chance of showers. Partly sunny, with a high near 87.