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

Jacksonville Municipal Airport (KIJX)

Lat: 39.77°NLon: 90.24°WElev: 614ft.

Fair

16°F

-9°C

Humidity 33%
Wind Speed W 14 G 23 mph
Barometer 30.39 in
Dewpoint -8°F (-22°C)
Visibility 10.00 mi
Wind Chill2°F (-17°C)
Last update 19 Jan 3:35 pm CST
Extended Forecast for

Griggsville IL

  • Tonight

    Tonight: Increasing clouds, with a low around 10. West wind around 5 mph becoming light and variable after midnight.

    Low: 10 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Mostly sunny, with a high near 33. South wind 5 to 9 mph.

    High: 33 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 30. South wind 8 to 16 mph becoming southwest after midnight. Winds could gust as high as 30 mph.

    Low: 30 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Sunny, with a high near 39. West wind 10 to 13 mph, with gusts as high as 23 mph.

    High: 39 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 20. Southwest wind 7 to 10 mph becoming northwest after midnight. Winds could gust as high as 21 mph.

    Low: 20 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 32.

    High: 32 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 5.

    Low: 5 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy and cold, with a high near 10.

    High: 10 °F

    Cold

  • Friday Night

    Friday Night: A 20 percent chance of snow before midnight. Mostly cloudy, with a low around -3.

    Low: -3 °F

    Slight Chance
    Snow then
    Mostly Cloudy

Detailed Forecast

Tonight
Increasing clouds, with a low around 10. West wind around 5 mph becoming light and variable after midnight.
Tuesday
Mostly sunny, with a high near 33. South wind 5 to 9 mph.
Tuesday Night
Increasing clouds, with a low around 30. South wind 8 to 16 mph becoming southwest after midnight. Winds could gust as high as 30 mph.
Wednesday
Sunny, with a high near 39. West wind 10 to 13 mph, with gusts as high as 23 mph.
Wednesday Night
Mostly clear, with a low around 20. Southwest wind 7 to 10 mph becoming northwest after midnight. Winds could gust as high as 21 mph.
Thursday
Mostly sunny, with a high near 32.
Thursday Night
Mostly cloudy, with a low around 5.
Friday
Mostly cloudy and cold, with a high near 10.
Friday Night
A 20 percent chance of snow before midnight. Mostly cloudy, with a low around -3.
Saturday
A 20 percent chance of snow after noon. Partly sunny and cold, with a high near 11.
Saturday Night
A 30 percent chance of snow. Partly cloudy, with a low around 0.
Sunday
Mostly sunny and cold, with a high near 19.
Sunday Night
Mostly clear, with a low around 8.
Monday
Sunny, with a high near 31.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Griggsville IL
 39.72°N 90.73°W (Elev. 653 ft)
Last Update:
3:16 pm CST Jan 19, 2026
Forecast Valid:
3pm CST Jan 19, 2026-6pm CST Jan 26, 2026
 
Forecast Discussion
 
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Additional Resources

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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