Heat Across the Center of the Nation; Severe Thunderstorms Across the Great Lakes and Ohio Valley

Heat expands across the Desert Southwest, Plains, Mississippi Valley and Midwest into Monday. Fire weather concerns continue for portions of the Intermountain West. Active monsoonal moisture fuels thunderstorms over the Southwest with possible flash flooding. Tropical cyclone Fausto in the Pacific, should weaken as it approaches Hawaii; Dangerous surf, swells and rip currents are expected. Read More >

Hazardous Weather Conditions

Current conditions at

Chicago, Chicago Midway Airport (KMDW)

Lat: 41.78°NLon: 87.76°WElev: 617ft.

Fog/Mist

78°F

26°C

Humidity	97%
Wind Speed	SW 9 mph
Barometer	29.86 in (1009.8 mb)
Dewpoint	77°F (25°C)
Visibility	4.00 mi
Heat Index	81°F (27°C)
Last update	27 Jul 5:53 am CDT

More Information:

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

Extended Forecast for

Chicago IL

Heat Advisory July 27, 06:16am until July 27, 09:00pm

Click here for hazard details and duration

Heat Advisory

Heat Advisory July 27, 06:16am until July 27, 09:00pm
NOW until 9:00pm Mon
Heat Advisory
Today
High: 90 °F
Heavy Rain
then Showers
Likely
Tonight
Low: 71 °F
Chance
T-storms then
Mostly Cloudy
Tuesday
High: 76 °F
Partly Sunny
Tuesday Night
Low: 68 °F
Mostly Clear
Wednesday
High: 78 °F
Sunny
Wednesday Night
Low: 68 °F
Mostly Clear
Thursday
High: 84 °F
Sunny
Thursday Night
Low: 71 °F
Partly Cloudy

Detailed Forecast

Today

Showers and thunderstorms likely before 11am, then showers likely and possibly a thunderstorm between 11am and 1pm, then a slight chance of showers and thunderstorms after 1pm. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 90. Heat index values as high as 105. South southwest wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

Tonight

A 30 percent chance of showers and thunderstorms, mainly between 11pm and midnight. Mostly cloudy, with a low around 71. West southwest wind 10 to 15 mph becoming north in the evening. Winds could gust as high as 25 mph.

Tuesday

Partly sunny, with a high near 76. North wind around 15 mph, with gusts as high as 25 mph.

Tuesday Night

Mostly clear, with a low around 68. North wind 5 to 15 mph, with gusts as high as 20 mph.

Wednesday

Sunny, with a high near 78. North northeast wind 5 to 10 mph.

Wednesday Night

Mostly clear, with a low around 68.

Thursday

Sunny, with a high near 84.

Thursday Night

Partly cloudy, with a low around 71.