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.

Overcast

51°F

11°C

Humidity 81%
Wind Speed SE 16 G 24 mph
Barometer 29.70 in
Dewpoint 46°F (8°C)
Visibility 10.00 mi
Wind Chill46°F (8°C)
Last update 17 Feb 3:55 pm CST
Extended Forecast for

Griggsville IL

  • Tonight

    Tonight: A slight chance of showers between 9pm and 3am. Cloudy, then gradually becoming partly cloudy, with a low around 52. Breezy, with a south wind 15 to 22 mph becoming southwest after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 20%.

    Low: 52 °F

    Slight Chance
    Showers and
    Breezy

  • Wednesday

    Wednesday: Sunny, with a high near 68. West wind 8 to 15 mph, with gusts as high as 26 mph.

    High: 68 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 43. Southeast wind around 6 mph.

    Low: 43 °F

    Mostly Cloudy

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after noon. Mostly sunny, with a high near 68. Southeast wind 7 to 14 mph becoming southwest in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 40%.

    High: 68 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A 20 percent chance of showers and thunderstorms before midnight. Mostly clear, with a low around 32. West wind 11 to 17 mph, with gusts as high as 28 mph.

    Low: 32 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 45.

    High: 45 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 26.

    Low: 26 °F

    Mostly Clear

  • Saturday

    Saturday: A 30 percent chance of snow, mainly after noon. Partly sunny, with a high near 39.

    High: 39 °F

    Chance Snow

  • Saturday Night

    Saturday Night: A 30 percent chance of snow, mainly before midnight. Partly cloudy, with a low around 23.

    Low: 23 °F

    Chance Snow

Detailed Forecast

Tonight
A slight chance of showers between 9pm and 3am. Cloudy, then gradually becoming partly cloudy, with a low around 52. Breezy, with a south wind 15 to 22 mph becoming southwest after midnight. Winds could gust as high as 31 mph. Chance of precipitation is 20%.
Wednesday
Sunny, with a high near 68. West wind 8 to 15 mph, with gusts as high as 26 mph.
Wednesday Night
Mostly cloudy, with a low around 43. Southeast wind around 6 mph.
Thursday
A chance of showers, with thunderstorms also possible after noon. Mostly sunny, with a high near 68. Southeast wind 7 to 14 mph becoming southwest in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 40%.
Thursday Night
A 20 percent chance of showers and thunderstorms before midnight. Mostly clear, with a low around 32. West wind 11 to 17 mph, with gusts as high as 28 mph.
Friday
Sunny, with a high near 45.
Friday Night
Mostly clear, with a low around 26.
Saturday
A 30 percent chance of snow, mainly after noon. Partly sunny, with a high near 39.
Saturday Night
A 30 percent chance of snow, mainly before midnight. Partly cloudy, with a low around 23.
Sunday
Mostly sunny, with a high near 35.
Sunday Night
Mostly clear, with a low around 17.
Monday
Mostly sunny, with a high near 36.
Monday Night
Partly cloudy, with a low around 20.
Tuesday
Mostly sunny, with a high near 46.
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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:
1:36 pm CST Feb 17, 2026
Forecast Valid:
4pm CST Feb 17, 2026-6pm CST Feb 24, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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