Dangerous Heat in the Southwest; Severe Thunderstorms from the Central Plains into the Ohio Valley

Dangerous heat will build across the Southwest U.S. through the end of the week with daytime highs of 110-115°F. Isolated to widely scattered severe storms are expected across parts of the central and southern High Plains, Great Lakes into the Ohio Valley, and parts of the Ozarks to Lower Mississippi Valley today. Read More >

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Fair

79°F

26°C

Humidity	58%
Wind Speed	NW 8 mph
Barometer	29.87 in (1010.3 mb)
Dewpoint	63°F (17°C)
Visibility	10.00 mi
Heat Index	81°F (27°C)
Last update	26 Aug 5:51 pm CDT

More Information:

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

Extended Forecast for

McHenry IL

Tonight
Low: 60 °F
Isolated
Showers then
Clear
Thursday
High: 80 °F
Mostly Sunny
Thursday Night
Low: 58 °F
Mostly Clear
Friday
High: 80 °F
Mostly Sunny
Friday Night
Low: 60 °F
Partly Cloudy
Saturday
High: 80 °F
Partly Sunny
Saturday Night
Low: 64 °F
Chance
Showers
Sunday
High: 85 °F
Chance
Showers
Sunday Night
Low: 70 °F
Chance
Showers

Detailed Forecast

Tonight

Isolated showers before 7pm. Mostly clear, with a low around 60. West northwest wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 20%.

Thursday

Mostly sunny, with a high near 80. North northwest wind 5 to 10 mph.

Thursday Night

Mostly clear, with a low around 58. Northeast wind around 5 mph becoming calm in the evening.

Friday

Mostly sunny, with a high near 80. Calm wind becoming southwest around 5 mph in the afternoon.

Friday Night

Partly cloudy, with a low around 60. South southeast wind around 5 mph.

Saturday

Partly sunny, with a high near 80.

Saturday Night

A slight chance of showers, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 64. Chance of precipitation is 40%.

Sunday

A chance of showers before 1pm. Partly sunny, with a high near 85.

Sunday Night

A chance of showers. Mostly cloudy, with a low around 70.

Monday

Partly sunny, with a high near 88.

Monday Night

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

Tuesday

Mostly sunny, with a high near 87.

Tuesday Night

Mostly cloudy, with a low around 68.