Severe Thunderstorms and Heavy Rain in the Central US

Isolated to scattered strong to severe thunderstorms may produce damaging winds and hail in the upper Great Lakes into the central High Plains. Heavy rain may create localized areas of flash flooding over parts of the Central Plains and Middle Mississippi Valley. Showers and strong to severe thunderstorms are possible over parts of the Mid-Atlantic. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Fair

87°F

31°C

Humidity	55%
Wind Speed	SE 9 mph
Barometer	29.87 in (1010.2 mb)
Dewpoint	69°F (21°C)
Visibility	10.00 mi
Heat Index	91°F (33°C)
Last update	29 Jun 4:51 pm CDT

More Information:

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

Extended Forecast for

McHenry IL

This Afternoon
High: 93 °F
Chance
T-storms
Tonight
Low: 71 °F
Chance
T-storms
Monday
High: 87 °F
Chance
T-storms then
Showers
Likely
Monday Night
Low: 63 °F
Chance
Showers
Tuesday
High: 83 °F
Sunny
Tuesday Night
Low: 63 °F
Mostly Clear
Wednesday
High: 86 °F
Sunny
Wednesday Night
Low: 65 °F
Partly Cloudy
Thursday
High: 85 °F
Sunny

Detailed Forecast

This Afternoon

A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93. Heat index values as high as 96. South southwest wind around 10 mph.

Tonight

Scattered showers and thunderstorms, mainly between 10pm and 3am. Mostly cloudy, with a low around 71. Southwest wind around 5 mph. Chance of precipitation is 40%.

Monday

A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 87. West wind 5 to 10 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

Monday Night

A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 63. West northwest wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 30%.

Tuesday

Sunny, with a high near 83. Northwest wind around 10 mph, with gusts as high as 20 mph.

Tuesday Night

Mostly clear, with a low around 63.

Wednesday

Sunny, with a high near 86.

Wednesday Night

Partly cloudy, with a low around 65.

Thursday

Sunny, with a high near 85.

Thursday Night

Mostly clear, with a low around 66.