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, Chicago Midway Airport (KMDW)

Lat: 41.78°NLon: 87.76°WElev: 617ft.

Overcast

69°F

21°C

Humidity	90%
Wind Speed	S 3 mph
Barometer	29.95 in (1013.6 mb)
Dewpoint	66°F (19°C)
Visibility	8.00 mi
Last update	19 Sep 1:53 pm CDT

More Information:

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

Extended Forecast for

Downers Grove IL

Flood Watch September 19, 02:22pm until September 20, 07:00am

Click here for hazard details and duration

Flood Watch

Flood Watch September 19, 02:22pm until September 20, 07:00am
NOW until 7:00am Sun
Flood Watch
This Afternoon
High: 71 °F
Showers
Likely
Tonight
Low: 65 °F
Showers
Sunday
High: 67 °F⇓
Showers
Sunday Night
Low: 57 °F
Chance
Showers
Monday
High: 64 °F
Chance
Showers
Monday Night
Low: 55 °F
Cloudy then
Slight Chance
Showers
Tuesday
High: 62 °F
Chance
Showers
Tuesday Night
Low: 54 °F
Mostly Cloudy

Detailed Forecast

This Afternoon

Showers likely and possibly a thunderstorm before 5pm, then a chance of showers and thunderstorms after 5pm. Cloudy, with a high near 71. East wind around 5 mph, with gusts as high as 10 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Tonight

A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7pm. Low around 65. East wind around 5 mph becoming west after midnight. Winds could gust as high as 10 mph. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

Sunday

Showers and possibly a thunderstorm before 1pm, then showers likely. Temperature falling to around 64 by 4pm. Northeast wind 10 to 15 mph, with gusts as high as 30 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

Sunday Night

A chance of showers before 8pm, then a slight chance of showers after 1am. Mostly cloudy, with a low around 57. East northeast wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 30%.

Monday

A 40 percent chance of showers. Cloudy, with a high near 64. East northeast wind around 15 mph, with gusts as high as 25 mph.

Monday Night

A 20 percent chance of showers after 1am. Cloudy, with a low around 55.

Tuesday

A 30 percent chance of showers, mainly before 1pm. Mostly cloudy, with a high near 62.

Tuesday Night

Mostly cloudy, with a low around 54.

Wednesday

Mostly cloudy, with a high near 64.

Wednesday Night

Mostly cloudy, with a low around 55.