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.

Fair

38°F

3°C

Humidity 68%
Wind Speed E 17 mph
Barometer 29.68 in (1005.2 mb)
Dewpoint 28°F (-2°C)
Visibility 10.00 mi
Wind Chill29°F (-2°C)
Last update 15 Mar 2:56 am CDT
Extended Forecast for

Nelson IL

Winter Storm Watch March 15, 10:00pm until March 16, 07:00pm
Click here for hazard details and duration
Winter Storm Watch

  • Overnight

    Overnight: A 20 percent chance of showers. Cloudy, with a steady temperature around 39. East southeast wind around 15 mph, with gusts as high as 25 mph.

    Low: 39 °F

    Slight Chance
    Showers

  • Sunday

    Sunday: Showers and thunderstorms before noon, then showers and possibly a thunderstorm, mainly after noon. High near 56. Breezy, with a south southeast wind 15 to 25 mph becoming southwest in the afternoon. Winds could gust as high as 40 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 56 °F

    Showers and
    Breezy

  • Sunday Night

    Sunday Night: Rain showers before 9pm, then rain and snow showers between 9pm and 11pm, then snow showers after 11pm. The snow could be heavy at times. Some thunder is also possible. Widespread blowing snow, mainly after 4am. Low around 18. Windy, with a northwest wind 20 to 25 mph increasing to 25 to 30 mph after midnight. Winds could gust as high as 50 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.

    Low: 18 °F

    Rain/Snow and
    Blowing Snow

  • Monday

    Monday: Snow showers likely, mainly before 1pm. Widespread blowing snow, mainly before 7am. Cloudy, with a high near 20. Wind chill values as low as -1. Windy, with a west northwest wind 25 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.

    High: 20 °F

    Snow Showers
    Likely and
    Blowing Snow

  • Monday Night

    Monday Night: Patchy blowing snow before 7pm. Mostly cloudy, with a low around 6. Blustery, with a west northwest wind 15 to 20 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 30 mph.

    Low: 6 °F

    Patchy
    Blowing Snow
    and Blustery
    then Partly
    Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 25.

    High: 25 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Snow showers likely. Mostly cloudy, with a low around 18. Chance of precipitation is 70%.

    Low: 18 °F

    Snow Showers
    Likely

  • Wednesday

    Wednesday: Mostly sunny, with a high near 44.

    High: 44 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 32.

    Low: 32 °F

    Partly Cloudy

Detailed Forecast

Overnight
A 20 percent chance of showers. Cloudy, with a steady temperature around 39. East southeast wind around 15 mph, with gusts as high as 25 mph.
Sunday
Showers and thunderstorms before noon, then showers and possibly a thunderstorm, mainly after noon. High near 56. Breezy, with a south southeast wind 15 to 25 mph becoming southwest in the afternoon. Winds could gust as high as 40 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
Rain showers before 9pm, then rain and snow showers between 9pm and 11pm, then snow showers after 11pm. The snow could be heavy at times. Some thunder is also possible. Widespread blowing snow, mainly after 4am. Low around 18. Windy, with a northwest wind 20 to 25 mph increasing to 25 to 30 mph after midnight. Winds could gust as high as 50 mph. Chance of precipitation is 90%. New snow accumulation of 3 to 5 inches possible.
Monday
Snow showers likely, mainly before 1pm. Widespread blowing snow, mainly before 7am. Cloudy, with a high near 20. Wind chill values as low as -1. Windy, with a west northwest wind 25 to 30 mph, with gusts as high as 45 mph. Chance of precipitation is 60%. New snow accumulation of around an inch possible.
Monday Night
Patchy blowing snow before 7pm. Mostly cloudy, with a low around 6. Blustery, with a west northwest wind 15 to 20 mph decreasing to 10 to 15 mph after midnight. Winds could gust as high as 30 mph.
Tuesday
Mostly sunny, with a high near 25.
Tuesday Night
Snow showers likely. Mostly cloudy, with a low around 18. Chance of precipitation is 70%.
Wednesday
Mostly sunny, with a high near 44.
Wednesday Night
Partly cloudy, with a low around 32.
Thursday
Mostly sunny, with a high near 55.
Thursday Night
Mostly cloudy, with a low around 36.
Friday
Mostly cloudy, with a high near 62.
Friday Night
Mostly cloudy, with a low around 37.
Saturday
Mostly sunny, with a high near 55.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Nelson IL
 41.79°N 89.61°W
Last Update:
2:56 am CDT Mar 15, 2026
Forecast Valid:
3am CDT Mar 15, 2026-6pm CDT Mar 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