Heavy Rainfall and Severe Thunderstorm Threats; Heat Risk Expands; Monitoring the Tropics

Flash flooding risks continue for portions of the Four Corners and Great Basin through today. Severe thunderstorms are outlooked from the eastern Great Lakes, southern New England into the mid-Atlantic through Tuesday. Heat risk increases and expands across the center of the nation and across the Ohio Valley and mid-Atlantic this week. Continue to closely monitor tropical development in the Gulf. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Chicago, Chicago-O'Hare International Airport (KORD)

Lat: 41.98°NLon: 87.9°WElev: 666ft.

Light Rain

84°F

29°C

Humidity	70%
Wind Speed	NW 3 mph
Barometer	29.92 in (1012.8 mb)
Dewpoint	73°F (23°C)
Visibility	10.00 mi
Heat Index	90°F (32°C)
Last update	31 Aug 3:51 pm CDT

More Information:

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

Extended Forecast for

Downers Grove IL

This Afternoon
High: 89 °F
Scattered
Showers
Tonight
Low: 74 °F
Scattered
Showers
Tuesday
High: 90 °F
Mostly Sunny
then Slight
Chance
T-storms
Tuesday Night
Low: 75 °F
Mostly Clear
Wednesday
High: 92 °F
Sunny
Wednesday Night
Low: 76 °F
Mostly Clear
Thursday
High: 87 °F
Chance
T-storms
Thursday Night
Low: 73 °F
Partly Cloudy
then Chance
T-storms
Friday
High: 87 °F
Mostly Sunny

Detailed Forecast

This Afternoon

Scattered showers and thunderstorms. Partly sunny, with a high near 89. Southwest wind around 15 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.

Tonight

Scattered showers and thunderstorms before 7pm, then isolated showers between 7pm and 1am. Partly cloudy, with a low around 74. Southwest wind 5 to 10 mph. Chance of precipitation is 30%.

Tuesday

A 20 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 90. Heat index values as high as 100. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.

Tuesday Night

Mostly clear, with a low around 75. Southwest wind 5 to 10 mph.

Wednesday

Sunny, with a high near 92. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.

Wednesday Night

Mostly clear, with a low around 76.

Thursday

A 30 percent chance of showers and thunderstorms, mainly before 1pm. Mostly sunny, with a high near 87.

Thursday Night

A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 73.

Friday

Mostly sunny, with a high near 87.