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

82°F

28°C

Humidity 35%
Wind Speed SW 12 mph
Barometer 29.72 in
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 21 Mar 5:35 pm CDT
Extended Forecast for

Saint Augustine IL

  • Tonight

    Tonight: Mostly clear, with a low around 57. South southwest wind 7 to 10 mph, with gusts as high as 23 mph.

    Low: 57 °F

    Mostly Clear

  • Sunday

    Sunday: A slight chance of showers between 2pm and 4pm. Increasing clouds, with a high near 67. Breezy, with a west wind 8 to 13 mph becoming north northeast 16 to 21 mph in the morning. Winds could gust as high as 31 mph. Chance of precipitation is 20%.

    High: 67 °F

    Partly Sunny
    then Slight
    Chance
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 30. North wind 12 to 17 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 29 mph.

    Low: 30 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 53. North northeast wind around 6 mph.

    High: 53 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 35. Calm wind becoming southeast around 5 mph after midnight.

    Low: 35 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 61. South wind 6 to 10 mph, with gusts as high as 16 mph.

    High: 61 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 42. South southeast wind around 7 mph, with gusts as high as 16 mph.

    Low: 42 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 65.

    High: 65 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 48.

    Low: 48 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 57. South southwest wind 7 to 10 mph, with gusts as high as 23 mph.
Sunday
A slight chance of showers between 2pm and 4pm. Increasing clouds, with a high near 67. Breezy, with a west wind 8 to 13 mph becoming north northeast 16 to 21 mph in the morning. Winds could gust as high as 31 mph. Chance of precipitation is 20%.
Sunday Night
Partly cloudy, with a low around 30. North wind 12 to 17 mph decreasing to 6 to 11 mph after midnight. Winds could gust as high as 29 mph.
Monday
Mostly sunny, with a high near 53. North northeast wind around 6 mph.
Monday Night
Mostly cloudy, with a low around 35. Calm wind becoming southeast around 5 mph after midnight.
Tuesday
Partly sunny, with a high near 61. South wind 6 to 10 mph, with gusts as high as 16 mph.
Tuesday Night
Mostly cloudy, with a low around 42. South southeast wind around 7 mph, with gusts as high as 16 mph.
Wednesday
Mostly cloudy, with a high near 65.
Wednesday Night
Partly cloudy, with a low around 48.
Thursday
Mostly sunny, with a high near 73.
Thursday Night
Partly cloudy, with a low around 35.
Friday
Partly sunny, with a high near 52.
Friday Night
Partly cloudy, with a low around 31.
Saturday
Mostly sunny, with a high near 54.
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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:
5:46 pm CDT Mar 21, 2026
Forecast Valid:
5pm CDT Mar 21, 2026-6pm CDT Mar 28, 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