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

Galesburg Municipal Airport (KGBG)

Lat: 40.93°NLon: 90.43°WElev: 751ft.

Fair

51°F

11°C

Humidity 97%
Wind Speed Calm
Barometer 30.04 in
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Last update 29 Sep 12:15 am CDT
Extended Forecast for

Knoxville IL

  • Overnight

    Overnight: Mostly clear, with a low around 49. Calm wind.

    Low: 49 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 78. Calm wind becoming south 5 to 9 mph in the morning. Winds could gust as high as 15 mph.

    High: 78 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers, mainly after 2am. Mostly cloudy, with a low around 63. South southeast wind 6 to 8 mph, with gusts as high as 18 mph.

    Low: 63 °F

    Mostly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: Showers likely, mainly before 2pm. Cloudy, with a high near 73. South wind 7 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.

    High: 73 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A 50 percent chance of showers. Mostly cloudy, with a low around 67. South wind 6 to 8 mph, with gusts as high as 18 mph.

    Low: 67 °F

    Chance
    Showers

  • Thursday

    Thursday: Showers. High near 72. Southwest wind 5 to 7 mph becoming northwest in the afternoon. Chance of precipitation is 80%. New precipitation amounts between three quarters and one inch possible.

    High: 72 °F

    Showers

  • Thursday Night

    Thursday Night: Showers likely. Cloudy, with a low around 57. North northeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts between a half and three quarters of an inch possible.

    Low: 57 °F

    Showers
    Likely

  • Friday

    Friday: A 40 percent chance of showers. Partly sunny, with a high near 66.

    High: 66 °F

    Chance
    Showers

  • Friday Night

    Friday Night: A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 52.

    Low: 52 °F

    Mostly Cloudy
    then Chance
    Showers

Detailed Forecast

Overnight
Mostly clear, with a low around 49. Calm wind.
Tuesday
Mostly sunny, with a high near 78. Calm wind becoming south 5 to 9 mph in the morning. Winds could gust as high as 15 mph.
Tuesday Night
A 30 percent chance of showers, mainly after 2am. Mostly cloudy, with a low around 63. South southeast wind 6 to 8 mph, with gusts as high as 18 mph.
Wednesday
Showers likely, mainly before 2pm. Cloudy, with a high near 73. South wind 7 to 9 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New precipitation amounts between a quarter and half of an inch possible.
Wednesday Night
A 50 percent chance of showers. Mostly cloudy, with a low around 67. South wind 6 to 8 mph, with gusts as high as 18 mph.
Thursday
Showers. High near 72. Southwest wind 5 to 7 mph becoming northwest in the afternoon. Chance of precipitation is 80%. New precipitation amounts between three quarters and one inch possible.
Thursday Night
Showers likely. Cloudy, with a low around 57. North northeast wind around 10 mph, with gusts as high as 20 mph. Chance of precipitation is 70%. New precipitation amounts between a half and three quarters of an inch possible.
Friday
A 40 percent chance of showers. Partly sunny, with a high near 66.
Friday Night
A 30 percent chance of showers after 1am. Mostly cloudy, with a low around 52.
Saturday
A 30 percent chance of showers before 1pm. Partly sunny, with a high near 66.
Saturday Night
Mostly cloudy, with a low around 53.
Sunday
Mostly sunny, with a high near 66.
Sunday Night
Partly cloudy, with a low around 49.
Monday
Sunny, with a high near 62.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Knoxville IL
 40.92°N 90.27°W (Elev. 751 ft)
Last Update:
11:41 pm CDT Sep 28, 2026
Forecast Valid:
12am CDT Sep 29, 2026-6pm CDT Oct 5, 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