Severe Thunderstorms in the Northern Plains and Upper Midwest; Critical Fire Weather in the West; Dangerous Heat in the Central and Eastern U.S.

Severe thunderstorms are likely today across the northern Plains and into the upper Mississippi Valley. Gusty winds and dry conditions will result in widespread critical fire weather through Saturday across parts of the Four Corners region and the Great Basin. A significant and dangerous heat wave will expand from the Central U.S. into the Eastern U.S this weekend through much of next week. Read More >

Current conditions at

Sterling Rockfalls (KSQI)

Lat: 41.74°NLon: 89.67°WElev: 643ft.

N/A

Humidity NA
Wind Speed NA
Barometer NA
Dewpoint N/A
Visibility NA
Last update *** Not a current observation ***
Extended Forecast for

Harmon IL

Heat Advisory June 21, 10:00am until June 24, 12:00am
Click here for hazard details and duration
Heat Advisory
  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 84. South wind around 15 mph, with gusts as high as 30 mph.

    High: 84 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 74. South wind 10 to 15 mph, with gusts as high as 25 mph.

    Low: 74 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 94. Heat index values as high as 107. Breezy, with a south southwest wind 15 to 25 mph, with gusts as high as 40 mph.

    High: 94 °F

    Sunny and
    Breezy

  • Saturday Night

    Saturday Night: Clear, with a low around 76. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 35 mph.

    Low: 76 °F

    Clear and
    Breezy then
    Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 95. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph.

    High: 95 °F

    Sunny then
    Sunny and
    Breezy

  • Sunday Night

    Sunday Night: Clear, with a low around 75.

    Low: 75 °F

    Clear

  • Monday

    Monday: Sunny and hot, with a high near 96.

    High: 96 °F

    Hot

  • Monday Night

    Monday Night: A chance of showers after 1am.  Partly cloudy, with a low around 74.

    Low: 74 °F

    Mostly Clear
    then Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers and thunderstorms.  Mostly sunny, with a high near 94.

    High: 94 °F

    Chance
    T-storms

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 84. South wind around 15 mph, with gusts as high as 30 mph.
Tonight
Mostly clear, with a low around 74. South wind 10 to 15 mph, with gusts as high as 25 mph.
Saturday
Sunny, with a high near 94. Heat index values as high as 107. Breezy, with a south southwest wind 15 to 25 mph, with gusts as high as 40 mph.
Saturday Night
Clear, with a low around 76. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 35 mph.
Sunday
Sunny and hot, with a high near 95. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph.
Sunday Night
Clear, with a low around 75.
Monday
Sunny and hot, with a high near 96.
Monday Night
A chance of showers after 1am. Partly cloudy, with a low around 74.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 94.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 92.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 70.
Thursday
A chance of showers and thunderstorms. Mostly sunny, with a high near 90.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Harmon IL
 41.73°N 89.56°W
3:12 pm CDT Jun 20, 2025
3pm CDT Jun 20, 2025-6pm CDT Jun 26, 2025
 
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Additional Resources

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Hourly Weather Forecast

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