National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Jacksonville Municipal Airport (KIJX)

Lat: 39.77°NLon: 90.24°WElev: 614ft.

Fair

78°F

26°C

Humidity 86%
Wind Speed SW 6 mph
Barometer 29.83 in
Dewpoint 74°F (23°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 12 Aug 3:15 am CDT
Extended Forecast for

4 Miles SSE Franklin IL

Heat Advisory August 12, 12:00pm until August 12, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Overnight

    Overnight: Partly cloudy, with a low around 74. South southwest wind around 7 mph, with gusts as high as 15 mph.

    Low: 74 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A 30 percent chance of showers and thunderstorms, mainly after noon. Partly sunny, with a high near 90. Heat index values as high as 103. Southwest wind 7 to 9 mph becoming east southeast in the afternoon. Winds could gust as high as 18 mph.

    High: 90 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A 30 percent chance of showers and thunderstorms, mainly after 4am. Mostly cloudy, with a low around 71. East southeast wind 6 to 8 mph.

    Low: 71 °F

    Chance
    T-storms

  • Thursday

    Thursday: A chance of showers and thunderstorms between 7am and 8am. Mostly cloudy, with a high near 89. Heat index values as high as 100. South wind 6 to 8 mph. Chance of precipitation is 30%.

    High: 89 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Thursday Night

    Thursday Night: A 40 percent chance of showers after 1am. Partly cloudy, with a low around 72. South southeast wind around 6 mph becoming east after midnight.

    Low: 72 °F

    Partly Cloudy
    then Chance
    Showers

  • Friday

    Friday: Partly sunny, with a high near 92. East wind around 6 mph.

    High: 92 °F

    Partly Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 73. East wind around 7 mph.

    Low: 73 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny and hot, with a high near 95.

    High: 95 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 74.

    Low: 74 °F

    Mostly Clear

Detailed Forecast

Overnight
Partly cloudy, with a low around 74. South southwest wind around 7 mph, with gusts as high as 15 mph.
Wednesday
A 30 percent chance of showers and thunderstorms, mainly after noon. Partly sunny, with a high near 90. Heat index values as high as 103. Southwest wind 7 to 9 mph becoming east southeast in the afternoon. Winds could gust as high as 18 mph.
Wednesday Night
A 30 percent chance of showers and thunderstorms, mainly after 4am. Mostly cloudy, with a low around 71. East southeast wind 6 to 8 mph.
Thursday
A chance of showers and thunderstorms between 7am and 8am. Mostly cloudy, with a high near 89. Heat index values as high as 100. South wind 6 to 8 mph. Chance of precipitation is 30%.
Thursday Night
A 40 percent chance of showers after 1am. Partly cloudy, with a low around 72. South southeast wind around 6 mph becoming east after midnight.
Friday
Partly sunny, with a high near 92. East wind around 6 mph.
Friday Night
Partly cloudy, with a low around 73. East wind around 7 mph.
Saturday
Sunny and hot, with a high near 95.
Saturday Night
Mostly clear, with a low around 74.
Sunday
Sunny, with a high near 92.
Sunday Night
Partly cloudy, with a low around 69.
Monday
Mostly sunny, with a high near 84.
Monday Night
Mostly clear, with a low around 64.
Tuesday
Mostly sunny, with a high near 84.
Basemap Options
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SSE Franklin IL
 39.57°N 90.02°W (Elev. 650 ft)
Last Update:
2:06 am CDT Aug 12, 2026
Forecast Valid:
3am CDT Aug 12, 2026-6pm CDT Aug 18, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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