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

49°F

9°C

Humidity 42%
Wind Speed Calm
Barometer 29.64 in
Dewpoint 26°F (-3°C)
Visibility 10.00 mi
Last update 18 Feb 7:55 pm CST
Extended Forecast for

Griggsville IL

  • Tonight

    Tonight: Partly cloudy, with a low around 43. Light and variable wind becoming east around 6 mph after midnight.

    Low: 43 °F

    Partly Cloudy

  • Thursday

    Thursday: Scattered showers and thunderstorms, mainly before 2pm. Patchy fog between 7am and 8am. Otherwise, partly sunny, with a high near 69. East wind 6 to 11 mph becoming southwest 12 to 17 mph in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 40%.

    High: 69 °F

    Scattered
    T-storms and
    Patchy Fog

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 34. Southwest wind 11 to 18 mph, with gusts as high as 31 mph.

    Low: 34 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 45. West wind 9 to 18 mph, with gusts as high as 30 mph.

    High: 45 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 26. Northwest wind around 7 mph.

    Low: 26 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 40.

    High: 40 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 20.

    Low: 20 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 35.

    High: 35 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 17.

    Low: 17 °F

    Mostly Clear

Detailed Forecast

Tonight
Partly cloudy, with a low around 43. Light and variable wind becoming east around 6 mph after midnight.
Thursday
Scattered showers and thunderstorms, mainly before 2pm. Patchy fog between 7am and 8am. Otherwise, partly sunny, with a high near 69. East wind 6 to 11 mph becoming southwest 12 to 17 mph in the afternoon. Winds could gust as high as 26 mph. Chance of precipitation is 40%.
Thursday Night
Partly cloudy, with a low around 34. Southwest wind 11 to 18 mph, with gusts as high as 31 mph.
Friday
Mostly sunny, with a high near 45. West wind 9 to 18 mph, with gusts as high as 30 mph.
Friday Night
Partly cloudy, with a low around 26. Northwest wind around 7 mph.
Saturday
Sunny, with a high near 40.
Saturday Night
Mostly clear, with a low around 20.
Sunday
Mostly sunny, with a high near 35.
Sunday Night
Mostly clear, with a low around 17.
Monday
Sunny, with a high near 36.
Monday Night
Partly cloudy, with a low around 20.
Tuesday
Partly sunny, with a high near 49.
Tuesday Night
Mostly cloudy, with a low around 35.
Wednesday
A 20 percent chance of rain. Partly sunny, with a high near 54.
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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:
7:56 pm CST Feb 18, 2026
Forecast Valid:
8pm CST Feb 18, 2026-6pm CST Feb 25, 2026
 
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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