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

87°F

31°C

Humidity 31%
Wind Speed S 3 mph
Barometer 30.12 in
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Heat Index85°F (29°C)
Last update 3 Oct 4:55 pm CDT
Extended Forecast for

Saint Augustine IL

  • Tonight

    Tonight: Mostly clear, with a low around 63. South southwest wind around 6 mph becoming calm after midnight.

    Low: 63 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 89. South wind 5 to 15 mph, with gusts as high as 23 mph.

    High: 89 °F

    Sunny

  • Saturday Night

    Saturday Night: Clear, with a low around 59. South wind 7 to 10 mph, with gusts as high as 17 mph.

    Low: 59 °F

    Clear

  • Sunday

    Sunday: Sunny, with a high near 87. South wind 8 to 15 mph, with gusts as high as 23 mph.

    High: 87 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 62. South wind 6 to 10 mph, with gusts as high as 20 mph.

    Low: 62 °F

    Mostly Clear

  • Monday

    Monday: A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. South southwest wind 5 to 7 mph becoming west in the afternoon.

    High: 85 °F

    Sunny then
    Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms, then showers likely after 1am. Mostly cloudy, with a low around 56. North wind 3 to 6 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 56 °F

    Chance
    T-storms then
    Showers
    Likely

  • Tuesday

    Tuesday: Partly sunny, with a high near 72.

    High: 72 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 46.

    Low: 46 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly clear, with a low around 63. South southwest wind around 6 mph becoming calm after midnight.
Saturday
Sunny, with a high near 89. South wind 5 to 15 mph, with gusts as high as 23 mph.
Saturday Night
Clear, with a low around 59. South wind 7 to 10 mph, with gusts as high as 17 mph.
Sunday
Sunny, with a high near 87. South wind 8 to 15 mph, with gusts as high as 23 mph.
Sunday Night
Mostly clear, with a low around 62. South wind 6 to 10 mph, with gusts as high as 20 mph.
Monday
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 85. South southwest wind 5 to 7 mph becoming west in the afternoon.
Monday Night
A chance of showers and thunderstorms, then showers likely after 1am. Mostly cloudy, with a low around 56. North wind 3 to 6 mph. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
Partly sunny, with a high near 72.
Tuesday Night
Mostly clear, with a low around 46.
Wednesday
Sunny, with a high near 73.
Wednesday Night
Mostly clear, with a low around 44.
Thursday
Sunny, with a high near 74.
Thursday Night
Mostly clear, with a low around 47.
Friday
Mostly sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Saint Augustine IL
 40.72°N 90.42°W (Elev. 600 ft)
Last Update:
4:36 pm CDT Oct 3, 2025
Forecast Valid:
5pm CDT Oct 3, 2025-6pm CDT Oct 10, 2025
 
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