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

Showers and Thunderstorms from the Southern Plains into the Ohio Valley; Record Warmth in the Central U.S.

Heavy rain and widely scattered severe storms are expected over portions of the central and southern Plains into the Ohio Valley. Unseasonable warmth will continue for a few more days across the Midwest, Southeast, and Mid-Atlantic where several daily record highs could fall. Read More >

Hazardous Weather Conditions

Current conditions at

Sterling Rockfalls (KSQI)

Lat: 41.74°NLon: 89.67°WElev: 643ft.

Overcast

66°F

19°C

Humidity 78%
Wind Speed E 10 mph
Barometer 30.10 in (1019.0 mb)
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 14 Oct 3:56 pm CDT
Extended Forecast for

Lyndon IL

  • This Afternoon

    This Afternoon: Mostly cloudy, with a high near 68. Northeast wind around 10 mph.

    High: 68 °F

    Mostly Cloudy

  • Tonight

    Tonight: A chance of showers and thunderstorms. Mostly cloudy, with a low around 53. East wind 5 to 10 mph. Chance of precipitation is 30%.

    Low: 53 °F

    Mostly Cloudy
    then Chance
    Showers

  • Thursday

    Thursday: Showers. High near 61. East wind 5 to 10 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 61 °F

    Showers

  • Thursday Night

    Thursday Night: Showers, mainly before midnight. Low around 46. Breezy, with a north wind 10 to 20 mph becoming northwest in the evening. Winds could gust as high as 30 mph. Chance of precipitation is 80%.

    Low: 46 °F

    Showers then
    Chance
    Showers and
    Breezy

  • Friday

    Friday: A 40 percent chance of showers after 1pm. Mostly cloudy, with a high near 56. Breezy.

    High: 56 °F

    Breezy.
    Mostly Cloudy
    then Chance
    Showers

  • Friday Night

    Friday Night: Widespread frost, mainly after 5am. Otherwise, mostly clear, with a low around 35.

    Low: 35 °F

    Partly Cloudy
    then Frost

  • Saturday

    Saturday: Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 58.

    High: 58 °F

    Frost then
    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 38.

    Low: 38 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

Detailed Forecast

This Afternoon
Mostly cloudy, with a high near 68. Northeast wind around 10 mph.
Tonight
A chance of showers and thunderstorms. Mostly cloudy, with a low around 53. East wind 5 to 10 mph. Chance of precipitation is 30%.
Thursday
Showers. High near 61. East wind 5 to 10 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Thursday Night
Showers, mainly before midnight. Low around 46. Breezy, with a north wind 10 to 20 mph becoming northwest in the evening. Winds could gust as high as 30 mph. Chance of precipitation is 80%.
Friday
A 40 percent chance of showers after 1pm. Mostly cloudy, with a high near 56. Breezy.
Friday Night
Widespread frost, mainly after 5am. Otherwise, mostly clear, with a low around 35.
Saturday
Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 58.
Saturday Night
Clear, with a low around 38.
Sunday
Sunny, with a high near 66.
Sunday Night
Mostly clear, with a low around 42.
Monday
Mostly sunny, with a high near 69.
Monday Night
Partly cloudy, with a low around 44.
Tuesday
Sunny, with a high near 72.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lyndon IL
 41.72°N 89.91°W (Elev. 600 ft)
Last Update:
3:26 pm CDT Oct 14, 2026
Forecast Valid:
4pm CDT Oct 14, 2026-6pm CDT Oct 20, 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