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

Hazardous Weather Conditions

Current conditions at

Galesburg Municipal Airport (KGBG)

Lat: 40.93°NLon: 90.43°WElev: 751ft.

Fair

75°F

24°C

Humidity 56%
Wind Speed S 7 mph
Barometer 29.78 in
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 15 May 7:55 pm CDT
Extended Forecast for

Gilson IL

  • Tonight

    Tonight: A chance of showers and thunderstorms between 1am and 3am, then showers likely and possibly a thunderstorm after 3am. Increasing clouds, with a low around 62. South southeast wind 8 to 10 mph becoming west after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 62 °F

    Mostly Clear
    then Showers
    Likely

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms, mainly after 4pm. Cloudy, then gradually becoming mostly sunny, with a high near 83. South southwest wind 7 to 9 mph, with gusts as high as 17 mph.

    High: 83 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61. South southeast wind around 6 mph, with gusts as high as 15 mph.

    Low: 61 °F

    Chance
    T-storms

  • Sunday

    Sunday: Mostly sunny, with a high near 88. Breezy, with a south wind 9 to 14 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 30 mph.

    High: 88 °F

    Mostly Sunny
    then Sunny
    and Breezy

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 67. South wind 14 to 17 mph, with gusts as high as 29 mph.

    Low: 67 °F

    Mostly Clear

  • Monday

    Monday: Showers and possibly a thunderstorm. High near 87. Breezy, with a south wind 15 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 87 °F

    Breezy.
    Showers
    Likely then
    T-storms

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 64. South wind 15 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 64 °F

    Showers
    Likely

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 77. Chance of precipitation is 50%.

    High: 77 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

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

    Low: 52 °F

    Chance
    Showers

Detailed Forecast

Tonight
A chance of showers and thunderstorms between 1am and 3am, then showers likely and possibly a thunderstorm after 3am. Increasing clouds, with a low around 62. South southeast wind 8 to 10 mph becoming west after midnight. Winds could gust as high as 22 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
A 30 percent chance of showers and thunderstorms, mainly after 4pm. Cloudy, then gradually becoming mostly sunny, with a high near 83. South southwest wind 7 to 9 mph, with gusts as high as 17 mph.
Saturday Night
A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 61. South southeast wind around 6 mph, with gusts as high as 15 mph.
Sunday
Mostly sunny, with a high near 88. Breezy, with a south wind 9 to 14 mph increasing to 16 to 21 mph in the afternoon. Winds could gust as high as 30 mph.
Sunday Night
Mostly clear, with a low around 67. South wind 14 to 17 mph, with gusts as high as 29 mph.
Monday
Showers and possibly a thunderstorm. High near 87. Breezy, with a south wind 15 to 20 mph, with gusts as high as 32 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 64. South wind 15 to 18 mph, with gusts as high as 29 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 77. Chance of precipitation is 50%.
Tuesday Night
A 30 percent chance of showers before 1am. Mostly cloudy, with a low around 52.
Wednesday
Mostly sunny, with a high near 68.
Wednesday Night
Partly cloudy, with a low around 48.
Thursday
Mostly sunny, with a high near 71.
Thursday Night
Partly cloudy, with a low around 51.
Friday
Mostly sunny, with a high near 76.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Gilson IL
 40.87°N 90.21°W (Elev. 699 ft)
Last Update:
2:51 pm CDT May 15, 2026
Forecast Valid:
8pm CDT May 15, 2026-6pm CDT May 22, 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