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

39°F

4°C

Humidity 36%
Wind Speed W 18 G 29 mph
Barometer 30.02 in
Dewpoint 15°F (-9°C)
Visibility 10.00 mi
Wind Chill30°F (-1°C)
Last update 21 Jan 1:35 pm CST
Extended Forecast for

Griggsville IL

  • This Afternoon

    This Afternoon: Sunny, with a high near 40. Southwest wind 13 to 15 mph, with gusts as high as 25 mph.

    High: 40 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 19. Northwest wind 11 to 16 mph becoming west 5 to 10 mph after midnight. Winds could gust as high as 30 mph.

    Low: 19 °F

    Mostly Clear

  • Thursday

    Thursday: Increasing clouds, with a high near 36. West wind 5 to 9 mph.

    High: 36 °F

    Increasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 1. Wind chill values as low as -15. Light and variable wind becoming north 11 to 16 mph in the evening. Winds could gust as high as 28 mph.

    Low: 1 °F

    Mostly Cloudy

  • Friday

    Friday: Mostly cloudy and cold, with a high near 7. North wind 10 to 16 mph, with gusts as high as 28 mph.

    High: 7 °F

    Cold

  • Friday Night

    Friday Night: A 20 percent chance of snow after midnight. Mostly cloudy, with a low around -1.

    Low: -1 °F

    Mostly Cloudy
    then Slight
    Chance Snow

  • Saturday

    Saturday: A 50 percent chance of snow. Cloudy and cold, with a high near 10.

    High: 10 °F

    Chance Snow

  • Saturday Night

    Saturday Night: Snow, mainly before midnight. Low around 5. Chance of precipitation is 80%.

    Low: 5 °F

    Snow then
    Chance Snow

  • Sunday

    Sunday: A 30 percent chance of snow, mainly before noon. Partly sunny and cold, with a high near 17.

    High: 17 °F

    Chance Snow

Detailed Forecast

This Afternoon
Sunny, with a high near 40. Southwest wind 13 to 15 mph, with gusts as high as 25 mph.
Tonight
Mostly clear, with a low around 19. Northwest wind 11 to 16 mph becoming west 5 to 10 mph after midnight. Winds could gust as high as 30 mph.
Thursday
Increasing clouds, with a high near 36. West wind 5 to 9 mph.
Thursday Night
Mostly cloudy, with a low around 1. Wind chill values as low as -15. Light and variable wind becoming north 11 to 16 mph in the evening. Winds could gust as high as 28 mph.
Friday
Mostly cloudy and cold, with a high near 7. North wind 10 to 16 mph, with gusts as high as 28 mph.
Friday Night
A 20 percent chance of snow after midnight. Mostly cloudy, with a low around -1.
Saturday
A 50 percent chance of snow. Cloudy and cold, with a high near 10.
Saturday Night
Snow, mainly before midnight. Low around 5. Chance of precipitation is 80%.
Sunday
A 30 percent chance of snow, mainly before noon. Partly sunny and cold, with a high near 17.
Sunday Night
Partly cloudy, with a low around -2.
Monday
Sunny and cold, with a high near 15.
Monday Night
Mostly clear, with a low around 5.
Tuesday
Mostly sunny, with a high near 28.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Griggsville IL
 39.72°N 90.73°W (Elev. 653 ft)
Last Update:
1:36 pm CST Jan 21, 2026
Forecast Valid:
1pm CST Jan 21, 2026-6pm CST Jan 27, 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