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 63%
Wind Speed S 13 mph
Barometer 29.84 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill44°F (7°C)
Last update 8 Jan 1:15 am CST
Extended Forecast for

Winchester IL

  • Overnight

    Overnight: Mostly cloudy, with a low around 43. South southeast wind around 10 mph, with gusts as high as 20 mph.

    Low: 43 °F

    Mostly Cloudy

  • Thursday

    Thursday: Rain likely, then rain and possibly a thunderstorm after 3pm. High near 64. Breezy, with a south southeast wind 11 to 16 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 36 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 64 °F

    Chance Rain
    then Rain and
    Breezy

  • Thursday Night

    Thursday Night: Rain and thunderstorms likely before midnight, then a slight chance of rain between midnight and 3am. Mostly cloudy, with a low around 43. South wind 15 to 18 mph becoming west after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 43 °F

    Rain Likely
    then Slight
    Chance Rain

  • Friday

    Friday: Mostly cloudy, with a high near 51. West wind 5 to 15 mph becoming north in the afternoon. Winds could gust as high as 25 mph.

    High: 51 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: A 40 percent chance of rain after midnight. Mostly cloudy, with a low around 35. Calm wind becoming north northwest around 6 mph after midnight.

    Low: 35 °F

    Mostly Cloudy
    then Chance
    Rain

  • Saturday

    Saturday: A 30 percent chance of rain before noon. Partly sunny, with a high near 42. West northwest wind 7 to 15 mph, with gusts as high as 24 mph.

    High: 42 °F

    Chance Rain
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 20. West northwest wind 11 to 14 mph, with gusts as high as 22 mph.

    Low: 20 °F

    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 32.

    High: 32 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 22.

    Low: 22 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 43. South southeast wind around 10 mph, with gusts as high as 20 mph.
Thursday
Rain likely, then rain and possibly a thunderstorm after 3pm. High near 64. Breezy, with a south southeast wind 11 to 16 mph increasing to 17 to 22 mph in the afternoon. Winds could gust as high as 36 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Rain and thunderstorms likely before midnight, then a slight chance of rain between midnight and 3am. Mostly cloudy, with a low around 43. South wind 15 to 18 mph becoming west after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Mostly cloudy, with a high near 51. West wind 5 to 15 mph becoming north in the afternoon. Winds could gust as high as 25 mph.
Friday Night
A 40 percent chance of rain after midnight. Mostly cloudy, with a low around 35. Calm wind becoming north northwest around 6 mph after midnight.
Saturday
A 30 percent chance of rain before noon. Partly sunny, with a high near 42. West northwest wind 7 to 15 mph, with gusts as high as 24 mph.
Saturday Night
Mostly cloudy, with a low around 20. West northwest wind 11 to 14 mph, with gusts as high as 22 mph.
Sunday
Mostly sunny, with a high near 32.
Sunday Night
Mostly clear, with a low around 22.
Monday
Sunny, with a high near 46.
Monday Night
Mostly clear, with a low around 32.
Tuesday
Partly sunny, with a high near 50.
Tuesday Night
Mostly cloudy, with a low around 32.
Wednesday
Mostly cloudy, with a high near 39.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Winchester IL
 39.62°N 90.44°W (Elev. 499 ft)
Last Update:
1:31 am CST Jan 8, 2026
Forecast Valid:
1am CST Jan 8, 2026-6pm CST Jan 14, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation