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

Fire Weather Concerns and Severe Weather

Dry and breezy conditions will bring elevated to critical fire weather conditions across portions of the northern and central High Plains through this weekend, where fuels remain largely receptive. Severe thunderstorms and heavy rainfall are possible from the Plains into the Upper Midwest, as well as in the Ohio Valley and portions of the Mid-Atlantic through this weekend. Read More >

Current conditions at

Sterling Rockfalls (KSQI)

Lat: 41.74°NLon: 89.67°WElev: 643ft.

Fair

67°F

19°C

Humidity 84%
Wind Speed SE 3 mph
Barometer 29.88 in (1011.5 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 11 Sep 8:56 pm CDT
Extended Forecast for

Lyndon IL

  • Tonight

    Tonight: Partly cloudy, with a low around 63. Southeast wind around 5 mph.

    Low: 63 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 86. South wind 5 to 10 mph becoming northwest in the afternoon.

    High: 86 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 58. North wind around 5 mph.

    Low: 58 °F

    Mostly Clear

  • Sunday

    Sunday: A 30 percent chance of showers after 1pm. Increasing clouds, with a high near 76. North wind 5 to 10 mph.

    High: 76 °F

    Mostly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: A 30 percent chance of showers after 1am. Partly cloudy, with a low around 53.

    Low: 53 °F

    Mostly Cloudy
    then Chance
    Showers

  • Monday

    Monday: A 40 percent chance of showers before 1pm. Partly sunny, with a high near 79.

    High: 79 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 66.

    Low: 66 °F

    Partly Cloudy
    then Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 83. Chance of precipitation is 70%.

    High: 83 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: Showers, with thunderstorms also possible after 1am. Low around 60. Chance of precipitation is 80%.

    Low: 60 °F

    Showers

Detailed Forecast

Tonight
Partly cloudy, with a low around 63. Southeast wind around 5 mph.
Saturday
Mostly sunny, with a high near 86. South wind 5 to 10 mph becoming northwest in the afternoon.
Saturday Night
Mostly clear, with a low around 58. North wind around 5 mph.
Sunday
A 30 percent chance of showers after 1pm. Increasing clouds, with a high near 76. North wind 5 to 10 mph.
Sunday Night
A 30 percent chance of showers after 1am. Partly cloudy, with a low around 53.
Monday
A 40 percent chance of showers before 1pm. Partly sunny, with a high near 79.
Monday Night
A 40 percent chance of showers after 1am. Mostly cloudy, with a low around 66.
Tuesday
A chance of showers, then showers likely and possibly a thunderstorm after 1pm. Mostly cloudy, with a high near 83. Chance of precipitation is 70%.
Tuesday Night
Showers, with thunderstorms also possible after 1am. Low around 60. Chance of precipitation is 80%.
Wednesday
Showers likely. Mostly cloudy, with a high near 75. Chance of precipitation is 70%.
Wednesday Night
Showers likely. Mostly cloudy, with a low around 60. Chance of precipitation is 70%.
Thursday
A 40 percent chance of showers. Partly sunny, with a high near 77.
Thursday Night
A 30 percent chance of showers. Partly cloudy, with a low around 56.
Friday
A 30 percent chance of showers. Mostly sunny, with a high near 73.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lyndon IL
 41.72°N 89.91°W (Elev. 600 ft)
Last Update:
5:31 pm CDT Sep 11, 2026
Forecast Valid:
9pm CDT Sep 11, 2026-6pm CDT Sep 18, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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