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Hazardous Weather Conditions

Current conditions at

Jacksonville Municipal Airport (KIJX)

Lat: 39.77°NLon: 90.24°WElev: 614ft.

Fair

41°F

5°C

Humidity 63%
Wind Speed E 3 mph
Barometer 30.29 in
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Last update 20 Apr 12:35 am CDT
Extended Forecast for

South Jacksonville IL

Frost Advisory April 20, 01:00am until April 20, 08:00am
Click here for hazard details and duration
Frost Advisory

  • Overnight

    Overnight: Areas of frost after 4am. Otherwise, mostly clear, with a low around 35. East northeast wind around 6 mph.

    Low: 35 °F

    Areas Frost

  • Monday

    Monday: Areas of frost before 8am. Otherwise, sunny, with a high near 65. East wind 5 to 8 mph becoming south in the afternoon.

    High: 65 °F

    Areas Frost
    then Sunny

  • Monday Night

    Monday Night: Increasing clouds, with a low around 48. South wind 8 to 10 mph, with gusts as high as 20 mph.

    Low: 48 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: Sunny, with a high near 78. Breezy, with a southwest wind 11 to 20 mph, with gusts as high as 28 mph.

    High: 78 °F

    Mostly Sunny
    then Sunny
    and Breezy

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 57. Southwest wind 10 to 13 mph, with gusts as high as 22 mph.

    Low: 57 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny, with a high near 78. West southwest wind around 9 mph, with gusts as high as 16 mph.

    High: 78 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 58. South wind 7 to 10 mph, with gusts as high as 20 mph.

    Low: 58 °F

    Mostly Clear

  • Thursday

    Thursday: Mostly sunny, with a high near 82. Breezy.

    High: 82 °F

    Sunny then
    Mostly Sunny
    and Breezy

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 59. Breezy. Chance of precipitation is 80%.

    Low: 59 °F

    Chance
    T-storms and
    Breezy then
    Showers

Detailed Forecast

Overnight
Areas of frost after 4am. Otherwise, mostly clear, with a low around 35. East northeast wind around 6 mph.
Monday
Areas of frost before 8am. Otherwise, sunny, with a high near 65. East wind 5 to 8 mph becoming south in the afternoon.
Monday Night
Increasing clouds, with a low around 48. South wind 8 to 10 mph, with gusts as high as 20 mph.
Tuesday
Sunny, with a high near 78. Breezy, with a southwest wind 11 to 20 mph, with gusts as high as 28 mph.
Tuesday Night
Partly cloudy, with a low around 57. Southwest wind 10 to 13 mph, with gusts as high as 22 mph.
Wednesday
Sunny, with a high near 78. West southwest wind around 9 mph, with gusts as high as 16 mph.
Wednesday Night
Mostly clear, with a low around 58. South wind 7 to 10 mph, with gusts as high as 20 mph.
Thursday
Mostly sunny, with a high near 82. Breezy.
Thursday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 1am. Low around 59. Breezy. Chance of precipitation is 80%.
Friday
Showers likely, mainly before 1pm. Mostly cloudy, with a high near 73. Chance of precipitation is 60%.
Friday Night
A chance of showers. Mostly cloudy, with a low around 48.
Saturday
Mostly sunny, with a high near 68.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 46.
Sunday
Partly sunny, with a high near 67.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
South Jacksonville IL
 39.7°N 90.24°W (Elev. 650 ft)
Last Update:
12:35 am CDT Apr 20, 2026
Forecast Valid:
12am CDT Apr 20, 2026-6pm CDT Apr 26, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation