An Active Weather Wednesday

Strong to severe thunderstorms are possible on Wednesday in parts of the Ohio Valley, Upper Mississippi Valley and south-central Plains. These storms may produce heavy rain and flooding in the Ohio Valley. Meanwhile, a strong cold front will sweep through the Northwest U.S. with rain, mountain snow and high winds. Finally, heat and record high temperatures are likely across the Southern U.S. Read More >

Hazardous Weather Conditions

Hazardous Weather Outlook

En Español

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Overcast

50°F

10°C

Humidity	77%
Wind Speed	NE 10 mph
Barometer	29.95 in (1014.4 mb)
Dewpoint	43°F (6°C)
Visibility	10.00 mi
Wind Chill	46°F (8°C)
Last update	18 May 5:55 am CDT

More Information:

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

Extended Forecast for

McHenry IL

Today

Showers
Likely
High: 60 °F
Tonight

Partly Cloudy
Low: 50 °F
Thursday

Mostly Sunny
High: 80 °F
Thursday
Night

Chance
T-storms
Low: 66 °F
Friday

Chance
T-storms
High: 83 °F
Friday
Night

Showers
Likely
Low: 52 °F
Saturday

Showers
Likely
High: 59 °F
Saturday
Night

Chance
Showers
Low: 44 °F
Sunday

Mostly Sunny
High: 61 °F

Detailed Forecast

Today

Showers likely, mainly before 1pm. Cloudy, with a high near 60. East southeast wind 5 to 10 mph becoming north in the afternoon. Winds could gust as high as 15 mph. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch possible.

Tonight

Partly cloudy, with a low around 50. North northwest wind around 5 mph becoming southwest after midnight.

Thursday

Mostly sunny, with a high near 80. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.

Thursday Night

A 30 percent chance of showers and thunderstorms, mainly after 1am. Mostly cloudy, with a low around 66. South wind 10 to 15 mph, with gusts as high as 20 mph.

Friday

A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 83. Southwest wind around 15 mph, with gusts as high as 25 mph.

Friday Night

Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 52. Chance of precipitation is 60%.

Saturday

Showers likely, mainly before 1pm. Mostly cloudy, with a high near 59. Chance of precipitation is 60%.

Saturday Night

A chance of showers before 1am. Mostly cloudy, with a low around 44.

Sunday

Mostly sunny, with a high near 61.

Sunday Night

Mostly clear, with a low around 43.