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.

Partly Cloudy

77°F

25°C

Humidity 69%
Wind Speed Calm
Barometer 29.92 in
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 2 Aug 6:55 pm CDT
Extended Forecast for

Altona IL

  • Tonight

    Tonight: Patchy fog after 5am. Otherwise, mostly clear, with a low around 60. North wind 5 to 7 mph becoming calm in the evening.

    Low: 60 °F

    Mostly Clear
    then Patchy
    Fog

  • Monday

    Monday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 82. Light east northeast wind.

    High: 82 °F

    Patchy Fog
    then Mostly
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 62. East southeast wind 3 to 5 mph.

    Low: 62 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 84. South wind 5 to 7 mph.

    High: 84 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 65. Light south wind.

    Low: 65 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 81. Light south wind. Chance of precipitation is 40%.

    High: 81 °F

    Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm. Low around 64. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 64 °F

    Showers

  • Thursday

    Thursday: A 50 percent chance of showers before 1pm. Partly sunny, with a high near 80.

    High: 80 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

Detailed Forecast

Tonight
Patchy fog after 5am. Otherwise, mostly clear, with a low around 60. North wind 5 to 7 mph becoming calm in the evening.
Monday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 82. Light east northeast wind.
Monday Night
Mostly clear, with a low around 62. East southeast wind 3 to 5 mph.
Tuesday
Sunny, with a high near 84. South wind 5 to 7 mph.
Tuesday Night
Partly cloudy, with a low around 65. Light south wind.
Wednesday
A chance of showers, with thunderstorms also possible after 1pm. Partly sunny, with a high near 81. Light south wind. Chance of precipitation is 40%.
Wednesday Night
Showers and possibly a thunderstorm. Low around 64. East wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday
A 50 percent chance of showers before 1pm. Partly sunny, with a high near 80.
Thursday Night
Partly cloudy, with a low around 63.
Friday
Mostly sunny, with a high near 82.
Friday Night
Partly cloudy, with a low around 65.
Saturday
Mostly sunny, with a high near 84.
Saturday Night
Mostly clear, with a low around 68.
Sunday
Mostly sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Altona IL
 41.11°N 90.15°W (Elev. 748 ft)
Last Update:
6:35 pm CDT Aug 2, 2026
Forecast Valid:
7pm CDT Aug 2, 2026-6pm CDT Aug 9, 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