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

Hazardous Weather Conditions

Current conditions at

Sterling Rockfalls (KSQI)

Lat: 41.74°NLon: 89.67°WElev: 643ft.

A Few Clouds

86°F

30°C

Humidity 77%
Wind Speed Vrbl 5 mph
Barometer 30.07 in (1017.7 mb)
Dewpoint 78°F (26°C)
Visibility 10.00 mi
Heat Index98°F (37°C)
Last update 17 Aug 11:56 am CDT
Extended Forecast for

Sheffield IL

Heat Advisory until August 17, 08:00pm
Click here for hazard details and duration
Heat Advisory
  •  
    Heat Advisory until August 17, 08:00pm

    NOW until 8:00pm Sun

    Heat Advisory

  • This Afternoon

    High: 90 °F

    Isolated
    T-storms

  • Tonight

    Tonight: Scattered showers and thunderstorms, mainly between 7pm and 11pm. Partly cloudy, with a low around 71. East wind 5 to 15 mph becoming south in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 50%.

    Low: 71 °F

    Scattered
    T-storms then
    Partly Cloudy

  • Monday

    Monday: Isolated showers and thunderstorms before 3pm, then isolated showers and thunderstorms after 4pm. Mostly sunny, with a high near 90. Heat index values as high as 101. South wind 5 to 10 mph. Chance of precipitation is 20%.

    High: 90 °F

    Isolated
    T-storms

  • Monday Night

    Monday Night: A 50 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 72. South wind around 5 mph.

    Low: 72 °F

    Isolated
    T-storms then
    Chance
    T-storms

  • Tuesday

    Tuesday: A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm. Mostly sunny, with a high near 87. Chance of precipitation is 30%.

    High: 87 °F

    Chance
    T-storms then
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 67.

    Low: 67 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 62.

    Low: 62 °F

    Partly Cloudy

Detailed Forecast

This Afternoon
Isolated showers and thunderstorms after 5pm. Mostly sunny, with a high near 90. Heat index values as high as 103. Calm wind becoming northeast around 5 mph. Chance of precipitation is 10%.
Tonight
Scattered showers and thunderstorms, mainly between 7pm and 11pm. Partly cloudy, with a low around 71. East wind 5 to 15 mph becoming south in the evening. Winds could gust as high as 20 mph. Chance of precipitation is 50%.
Monday
Isolated showers and thunderstorms before 3pm, then isolated showers and thunderstorms after 4pm. Mostly sunny, with a high near 90. Heat index values as high as 101. South wind 5 to 10 mph. Chance of precipitation is 20%.
Monday Night
A 50 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 72. South wind around 5 mph.
Tuesday
A chance of showers and thunderstorms before 10am, then a chance of showers between 10am and 1pm. Mostly sunny, with a high near 87. Chance of precipitation is 30%.
Tuesday Night
Partly cloudy, with a low around 67.
Wednesday
Mostly sunny, with a high near 81.
Wednesday Night
Partly cloudy, with a low around 62.
Thursday
Sunny, with a high near 83.
Thursday Night
Mostly clear, with a low around 60.
Friday
Sunny, with a high near 85.
Friday Night
Mostly clear, with a low around 62.
Saturday
Mostly sunny, with a high near 82.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Sheffield IL
 41.36°N 89.73°W (Elev. 689 ft)
Last Update:
12:31 pm CDT Aug 17, 2025
Forecast Valid:
12pm CDT Aug 17, 2025-6pm CDT Aug 23, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation