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

Sterling Rockfalls (KSQI)

Lat: 41.74°NLon: 89.67°WElev: 643ft.

Fair

55°F

13°C

Humidity 57%
Wind Speed SE 9 G 16 mph
Barometer 30.36 in (1028.3 mb)
Dewpoint 40°F (4°C)
Visibility 10.00 mi
Wind Chill53°F (12°C)
Last update 11 Apr 12:56 pm CDT
Extended Forecast for

Nelson IL

  • This Afternoon

    This Afternoon: A 10 percent chance of showers after 5pm. Mostly cloudy, with a high near 59. Southeast wind around 10 mph, with gusts as high as 20 mph.

    High: 59 °F

    Slight Chance
    Showers

  • Tonight

    Tonight: A chance of showers, with thunderstorms also possible after 10pm. Mostly cloudy, with a low around 52. East southeast wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.

    Low: 52 °F

    Chance
    Showers then
    Chance
    T-storms

  • Sunday

    Sunday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Mostly cloudy, with a high near 75. Breezy, with a south southwest wind 15 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 75 °F

    Breezy.
    Chance
    T-storms then
    Showers
    Likely

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm. Low around 60. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.

    Low: 60 °F

    Showers and
    Breezy

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms, mainly before 1pm. Mostly cloudy, with a high near 77. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.

    High: 77 °F

    Chance
    T-storms then
    Chance
    Showers

  • Monday Night

    Monday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65.

    Low: 65 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday

    Tuesday: A 50 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 82.

    High: 82 °F

    Slight Chance
    T-storms then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 62.

    Low: 62 °F

    Showers

  • Wednesday

    Wednesday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 77.

    High: 77 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
A 10 percent chance of showers after 5pm. Mostly cloudy, with a high near 59. Southeast wind around 10 mph, with gusts as high as 20 mph.
Tonight
A chance of showers, with thunderstorms also possible after 10pm. Mostly cloudy, with a low around 52. East southeast wind around 10 mph, with gusts as high as 25 mph. Chance of precipitation is 50%.
Sunday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5pm. Mostly cloudy, with a high near 75. Breezy, with a south southwest wind 15 to 25 mph, with gusts as high as 35 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Showers and possibly a thunderstorm. Low around 60. Breezy, with a south southwest wind 15 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 90%.
Monday
A 30 percent chance of showers and thunderstorms, mainly before 1pm. Mostly cloudy, with a high near 77. Southwest wind 10 to 15 mph, with gusts as high as 20 mph.
Monday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 65.
Tuesday
A 50 percent chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 82.
Tuesday Night
Showers and possibly a thunderstorm before 1am, then a chance of showers. Mostly cloudy, with a low around 62.
Wednesday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 77.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 57.
Thursday
Mostly sunny, with a high near 77.
Thursday Night
Mostly clear, with a low around 56.
Friday
A chance of showers. Mostly sunny, with a high near 79.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Nelson IL
 41.79°N 89.61°W
Last Update:
1:21 pm CDT Apr 11, 2026
Forecast Valid:
1pm CDT Apr 11, 2026-6pm CDT Apr 17, 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