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.

Fog/Mist

72°F

22°C

Humidity 100%
Wind Speed Vrbl 3 mph
Barometer 30.02 in (1015.9 mb)
Dewpoint 72°F (22°C)
Visibility 5.00 mi
Last update 9 Sep 2:56 am CDT
Extended Forecast for

Walnut IL

  • Overnight

    Overnight: Showers and possibly a thunderstorm. Low around 72. South wind 5 to 10 mph. Chance of precipitation is 80%.

    Low: 72 °F

    Showers

  • Wednesday

    Wednesday: Showers and thunderstorms, mainly before noon. High near 79. Southwest wind 5 to 10 mph. Chance of precipitation is 80%.

    High: 79 °F

    Showers then
    Slight Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 64. Calm wind becoming west around 5 mph.

    Low: 64 °F

    Mostly Cloudy

  • Thursday

    Thursday: Partly sunny, with a high near 80. Northeast wind around 5 mph.

    High: 80 °F

    Partly Sunny

  • Thursday Night

    Thursday Night: Clear, with a low around 56.

    Low: 56 °F

    Clear

  • Friday

    Friday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Friday Night

    Friday Night: A 40 percent chance of showers after 1am. Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear
    then Chance
    Showers

  • Saturday

    Saturday: A 40 percent chance of showers before 1pm. Partly sunny, with a high near 84.

    High: 84 °F

    Chance
    Showers

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 62.

    Low: 62 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Showers and possibly a thunderstorm. Low around 72. South wind 5 to 10 mph. Chance of precipitation is 80%.
Wednesday
Showers and thunderstorms, mainly before noon. High near 79. Southwest wind 5 to 10 mph. Chance of precipitation is 80%.
Wednesday Night
Mostly cloudy, with a low around 64. Calm wind becoming west around 5 mph.
Thursday
Partly sunny, with a high near 80. Northeast wind around 5 mph.
Thursday Night
Clear, with a low around 56.
Friday
Sunny, with a high near 82.
Friday Night
A 40 percent chance of showers after 1am. Mostly clear, with a low around 64.
Saturday
A 40 percent chance of showers before 1pm. Partly sunny, with a high near 84.
Saturday Night
Mostly cloudy, with a low around 62.
Sunday
A 30 percent chance of showers. Partly sunny, with a high near 83.
Sunday Night
A 30 percent chance of showers. Mostly cloudy, with a low around 67.
Monday
A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 89.
Monday Night
Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 66. Chance of precipitation is 70%.
Tuesday
A 30 percent chance of showers. Mostly sunny, with a high near 79.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Walnut IL
 41.55°N 89.6°W (Elev. 696 ft)
Last Update:
2:16 am CDT Sep 9, 2026
Forecast Valid:
3am CDT Sep 9, 2026-6pm CDT Sep 15, 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