National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Southern U.S. Severe Thunderstorm and Flash Flood Threat Sunday; Fire Weather in the West

Isolated to scattered severe thunderstorms may occur Sunday from parts of central and east Texas into the lower Mississippi Valley and Mid-South. Locally heavy rain may cause flash flooding in the lower Mississippi Valley. Elevated to critical fire weather conditions are forecast across parts of northern California and the Southwest again Sunday and Monday. Read More >

Hazardous Weather Conditions

Current conditions at

Chicago/Waukegan Regional Airport (KUGN)

Lat: 42.43°NLon: 87.86°WElev: 709ft.

Overcast

44°F

7°C

Humidity 68%
Wind Speed NE 9 mph
Barometer 29.91 in (1013.5 mb)
Dewpoint 34°F (1°C)
Visibility 10.00 mi
Wind Chill39°F (4°C)
Last update 9 May 8:55 am CDT
Extended Forecast for

McHenry IL

  • Today

    Today: Cloudy, then gradually becoming mostly sunny, with a high near 53. Northeast wind around 15 mph, with gusts as high as 25 mph.

    Decreasing
    Clouds

    High: 53 °F

  • Tonight

    Tonight: Areas of frost after 1am. Otherwise, partly cloudy, with a low around 35. North northeast wind 5 to 10 mph.

    Mostly Clear
    then Areas
    Frost

    Low: 35 °F

  • Monday

    Monday: Partly sunny, with a high near 54. North wind 5 to 10 mph.

    Partly Sunny

    High: 54 °F

  • Monday
    Night

    Monday Night: Areas of frost after 1am. Otherwise, mostly clear, with a low around 32. East wind around 5 mph becoming calm in the evening.

    Partly Cloudy
    then Areas
    Frost

    Low: 32 °F

  • Tuesday

    Tuesday: Areas of frost before 8am. Otherwise, sunny, with a high near 56. Light north wind becoming north northeast 5 to 10 mph in the morning.

    Areas Frost
    then Mostly
    Sunny

    High: 56 °F

  • Tuesday
    Night

    Tuesday Night: Areas of frost after 1am. Otherwise, mostly clear, with a low around 36.

    Mostly Clear
    then Areas
    Frost

    Low: 36 °F

  • Wednesday

    Wednesday: Sunny, with a high near 64.

    Sunny

    High: 64 °F

  • Wednesday
    Night

    Wednesday Night: Partly cloudy, with a low around 42.

    Partly Cloudy

    Low: 42 °F

  • Thursday

    Thursday: Mostly sunny, with a high near 66.

    Mostly Sunny

    High: 66 °F

Detailed Forecast

Today
Cloudy, then gradually becoming mostly sunny, with a high near 53. Northeast wind around 15 mph, with gusts as high as 25 mph.
Tonight
Areas of frost after 1am. Otherwise, partly cloudy, with a low around 35. North northeast wind 5 to 10 mph.
Monday
Partly sunny, with a high near 54. North wind 5 to 10 mph.
Monday Night
Areas of frost after 1am. Otherwise, mostly clear, with a low around 32. East wind around 5 mph becoming calm in the evening.
Tuesday
Areas of frost before 8am. Otherwise, sunny, with a high near 56. Light north wind becoming north northeast 5 to 10 mph in the morning.
Tuesday Night
Areas of frost after 1am. Otherwise, mostly clear, with a low around 36.
Wednesday
Sunny, with a high near 64.
Wednesday Night
Partly cloudy, with a low around 42.
Thursday
Mostly sunny, with a high near 66.
Thursday Night
Partly cloudy, with a low around 44.
Friday
A slight chance of showers. Mostly sunny, with a high near 69.
Friday Night
A chance of showers. Partly cloudy, with a low around 49.
Saturday
A chance of showers. Mostly sunny, with a high near 71.
Click Map For Forecast
Disclaimer
Map Legend
Point Forecast:
McHenry IL
 42.34°N 88.26°W
Last Update:
9:15 am CDT May 9, 2021
Forecast Valid:
9am CDT May 9, 2021-6pm CDT May 15, 2021
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation