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

37°F

3°C

Humidity 56%
Wind Speed N 6 mph
Barometer 30.08 in
Dewpoint 23°F (-5°C)
Visibility 10.00 mi
Wind Chill32°F (0°C)
Last update 28 Feb 7:35 am CST
Extended Forecast for

Winchester IL

  • Today

    Today: Isolated showers between 1pm and 3pm. Partly sunny, with a high near 57. Northeast wind 6 to 10 mph becoming east southeast in the afternoon. Winds could gust as high as 15 mph. Chance of precipitation is 20%.

    High: 57 °F

    Partly Sunny
    then Isolated
    Showers

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming clear, with a low around 25. North wind 7 to 11 mph, with gusts as high as 21 mph.

    Low: 25 °F

    Decreasing
    Clouds

  • Sunday

    Sunday: A 20 percent chance of snow after noon. Increasing clouds, with a high near 41. Northeast wind 9 to 11 mph, with gusts as high as 20 mph.

    High: 41 °F

    Partly Sunny
    then Slight
    Chance Snow

  • Sunday Night

    Sunday Night: Snow likely. Cloudy, with a low around 27. East wind 7 to 9 mph, with gusts as high as 17 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.

    Low: 27 °F

    Snow Likely

  • Monday

    Monday: A chance of snow before 9am, then a chance of rain between 9am and noon. Cloudy, with a high near 41. East southeast wind 8 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 30%.

    High: 41 °F

    Chance
    Rain/Snow
    then Cloudy

  • Monday Night

    Monday Night: Rain. Low around 34. Southeast wind around 8 mph, with gusts as high as 17 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 34 °F

    Rain Likely
    then Rain

  • Tuesday

    Tuesday: Rain. High near 53. South southeast wind around 8 mph becoming north in the afternoon. Winds could gust as high as 16 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.

    High: 53 °F

    Rain

  • Tuesday Night

    Tuesday Night: Rain, with thunderstorms also possible after midnight. Low around 41. Chance of precipitation is 80%.

    Low: 41 °F

    Rain

  • Wednesday

    Wednesday: Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 61. Chance of precipitation is 70%.

    High: 61 °F

    Rain Likely

Detailed Forecast

Today
Isolated showers between 1pm and 3pm. Partly sunny, with a high near 57. Northeast wind 6 to 10 mph becoming east southeast in the afternoon. Winds could gust as high as 15 mph. Chance of precipitation is 20%.
Tonight
Mostly cloudy, then gradually becoming clear, with a low around 25. North wind 7 to 11 mph, with gusts as high as 21 mph.
Sunday
A 20 percent chance of snow after noon. Increasing clouds, with a high near 41. Northeast wind 9 to 11 mph, with gusts as high as 20 mph.
Sunday Night
Snow likely. Cloudy, with a low around 27. East wind 7 to 9 mph, with gusts as high as 17 mph. Chance of precipitation is 70%. New snow accumulation of 1 to 3 inches possible.
Monday
A chance of snow before 9am, then a chance of rain between 9am and noon. Cloudy, with a high near 41. East southeast wind 8 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 30%.
Monday Night
Rain. Low around 34. Southeast wind around 8 mph, with gusts as high as 17 mph. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Tuesday
Rain. High near 53. South southeast wind around 8 mph becoming north in the afternoon. Winds could gust as high as 16 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Tuesday Night
Rain, with thunderstorms also possible after midnight. Low around 41. Chance of precipitation is 80%.
Wednesday
Rain likely and possibly a thunderstorm. Mostly cloudy, with a high near 61. Chance of precipitation is 70%.
Wednesday Night
Rain likely, mainly before midnight. Mostly cloudy, with a low around 44. Chance of precipitation is 60%.
Thursday
A chance of rain. Partly sunny, with a high near 65.
Thursday Night
A chance of rain. Mostly cloudy, with a low around 49.
Friday
Rain likely. Mostly cloudy, with a high near 69.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Winchester IL
 39.62°N 90.44°W (Elev. 499 ft)
Last Update:
5:56 am CST Feb 28, 2026
Forecast Valid:
7am CST Feb 28, 2026-6pm CST Mar 6, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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