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.

Overcast

74°F

23°C

Humidity 100%
Wind Speed Calm
Barometer 30.05 in (1017.1 mb)
Dewpoint 74°F (23°C)
Visibility 7.00 mi
Last update 15 Aug 9:56 am CDT
Extended Forecast for

Nelson IL

  • Today

    Today: A chance of showers before 1pm, then a slight chance of showers after 2pm. Mostly cloudy, with a high near 83. Southwest wind around 5 mph. Chance of precipitation is 30%.

    High: 83 °F

    Chance
    Showers

  • Tonight

    Tonight: A slight chance of showers, then a chance of showers and thunderstorms after 11pm. Mostly cloudy, with a low around 71. South wind around 5 mph. Chance of precipitation is 50%.

    Low: 71 °F

    Chance
    Showers then
    Chance
    T-storms

  • Sunday

    Sunday: A 20 percent chance of showers and thunderstorms before 8am. Partly sunny, with a high near 83. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.

    High: 83 °F

    Slight Chance
    T-storms then
    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 62. Northwest wind 5 to 10 mph.

    Low: 62 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 81. Calm wind becoming northwest around 5 mph in the afternoon.

    High: 81 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 61.

    Low: 61 °F

    Mostly Clear

  • Tuesday

    Tuesday: Partly sunny, with a high near 82.

    High: 82 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers, then showers and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 66.

    Low: 66 °F

    Showers

  • Wednesday

    Wednesday: A chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 79.

    High: 79 °F

    Chance
    T-storms

Detailed Forecast

Today
A chance of showers before 1pm, then a slight chance of showers after 2pm. Mostly cloudy, with a high near 83. Southwest wind around 5 mph. Chance of precipitation is 30%.
Tonight
A slight chance of showers, then a chance of showers and thunderstorms after 11pm. Mostly cloudy, with a low around 71. South wind around 5 mph. Chance of precipitation is 50%.
Sunday
A 20 percent chance of showers and thunderstorms before 8am. Partly sunny, with a high near 83. Northwest wind 5 to 10 mph, with gusts as high as 15 mph.
Sunday Night
Mostly clear, with a low around 62. Northwest wind 5 to 10 mph.
Monday
Sunny, with a high near 81. Calm wind becoming northwest around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 61.
Tuesday
Partly sunny, with a high near 82.
Tuesday Night
A chance of showers, then showers and possibly a thunderstorm after 1am. Mostly cloudy, with a low around 66.
Wednesday
A chance of showers and thunderstorms before 1pm. Mostly cloudy, with a high near 79.
Wednesday Night
Partly cloudy, with a low around 58.
Thursday
Mostly sunny, with a high near 74.
Thursday Night
Partly cloudy, with a low around 56.
Friday
Mostly sunny, with a high near 75.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Nelson IL
 41.79°N 89.61°W
Last Update:
8:46 am CDT Aug 15, 2026
Forecast Valid:
10am CDT Aug 15, 2026-6pm CDT Aug 21, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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