Excessive Rainfall Potential for the Southeast; Heat Expands for Center of the Nation; Critical Fire Weather for Pacific Northwest

Flash flooding threatens areas from the Tennessee Valley to the Carolinas as storms repeat along a stalled front. Monsoonal storms may trigger flooding in the Southwest. Dangerous heat expands across the Desert Southwest, Plains, mid-Mississippi Valley and Southern Tier. Critical fire weather for interior Pacific Northwest. Cooler, drier air brings brief relief to the Great Lakes and Northeast. Read More >

Current conditions at

Sterling Rockfalls (KSQI)

Lat: 41.74°NLon: 89.67°WElev: 643ft.

Fair

78°F

26°C

Humidity 79%
Wind Speed Vrbl 3 mph
Barometer 29.98 in (1014.7 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 25 Jul 2:56 pm CDT
Extended Forecast for

Nelson IL

Heat Advisory July 26, 12:00pm until July 26, 08:00pm
Click here for hazard details and duration
Heat Advisory
  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 81. Southwest wind around 5 mph, with gusts as high as 10 mph.

    High: 81 °F

    Mostly Cloudy

  • Tonight

    Tonight: Patchy fog after 3am.  Otherwise, partly cloudy, with a low around 69. South southwest wind around 5 mph becoming calm  in the evening.

    Low: 69 °F

    Partly Cloudy
    then Patchy
    Fog

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms before 2pm.  Patchy fog before 8am.  Otherwise, partly sunny, with a high near 92. Heat index values as high as 107. Light south southeast wind becoming south southwest 5 to 10 mph in the morning. Winds could gust as high as 15 mph.

    High: 92 °F

    Slight Chance
    T-storms and
    Patchy Fog

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers and thunderstorms after 4am.  Partly cloudy, with a low around 74. Southwest wind 5 to 10 mph, with gusts as high as 15 mph.  Chance of precipitation is 20%.

    Low: 74 °F

    Slight Chance
    T-storms

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms before 1pm.  Mostly sunny and hot, with a high near 95. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.

    High: 95 °F

    Slight Chance
    T-storms

  • Monday Night

    Monday Night: Mostly clear, with a low around 70.

    Low: 70 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 88.

    High: 88 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 63.

    Low: 63 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 86.

    High: 86 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 81. Southwest wind around 5 mph, with gusts as high as 10 mph.
Tonight
Patchy fog after 3am. Otherwise, partly cloudy, with a low around 69. South southwest wind around 5 mph becoming calm in the evening.
Sunday
A 20 percent chance of showers and thunderstorms before 2pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 92. Heat index values as high as 107. Light south southeast wind becoming south southwest 5 to 10 mph in the morning. Winds could gust as high as 15 mph.
Sunday Night
A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers and thunderstorms after 4am. Partly cloudy, with a low around 74. Southwest wind 5 to 10 mph, with gusts as high as 15 mph. Chance of precipitation is 20%.
Monday
A 20 percent chance of showers and thunderstorms before 1pm. Mostly sunny and hot, with a high near 95. Southwest wind 5 to 15 mph, with gusts as high as 20 mph.
Monday Night
Mostly clear, with a low around 70.
Tuesday
Mostly sunny, with a high near 88.
Tuesday Night
Mostly clear, with a low around 63.
Wednesday
Sunny, with a high near 86.
Wednesday Night
Mostly clear, with a low around 63.
Thursday
Sunny, with a high near 86.
Thursday Night
Partly cloudy, with a low around 65.
Friday
Mostly sunny, with a high near 87.
Basemap Options
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ABOUT THIS FORECAST

 
Point Forecast:
Nelson IL
 41.79°N 89.61°W
2:51 pm CDT Jul 25, 2026
3pm CDT Jul 25, 2026-6pm CDT Jul 31, 2026
 
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Additional Resources

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