Dangerous Heat Builds and Expands; Critical Fire Weather for the Southwest; Severe Thunderstorms for Plains and Midwest

Dangerous to record breaking heat will build across the center of the nation and slowly build eastward this week. Wildfire conditions remain critical for the Southwest and portions of the Great Basin through Monday. For the northern Plains and upper Midwest, severe thunderstorms with the potential for large to very large hail and severe winds are the primary hazards. Read More >

Current conditions at

Jacksonville Municipal Airport (KIJX)

Lat: 39.77°NLon: 90.24°WElev: 614ft.

Fair

78°F

26°C

Humidity 100%
Wind Speed S 7 mph
Barometer 29.87 in
Dewpoint 78°F (26°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 29 Jun 2:15 am CDT
Extended Forecast for

3 Miles WSW Jacksonville Municipal Airport IL

Heat Advisory June 29, 11:00am until July 3, 12:00am
Click here for hazard details and duration
Heat Advisory
  • Overnight

    Overnight: Partly cloudy, with a low around 75. South wind around 8 mph, with gusts as high as 17 mph.

    Low: 75 °F

    Partly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 93. Heat index values as high as 106. South wind 9 to 15 mph, with gusts as high as 23 mph.

    High: 93 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 77. South southwest wind 8 to 11 mph, with gusts as high as 21 mph.

    Low: 77 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny and hot, with a high near 95. Heat index values as high as 106. South southwest wind 9 to 13 mph, with gusts as high as 21 mph.

    High: 95 °F

    Hot

  • Tuesday Night

    Tuesday Night: Clear, with a low around 74. South southwest wind 7 to 11 mph, with gusts as high as 20 mph.

    Low: 74 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 94. South southwest wind 7 to 10 mph, with gusts as high as 18 mph.

    High: 94 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 75. South wind 6 to 9 mph, with gusts as high as 15 mph.

    Low: 75 °F

    Mostly Clear

  • Thursday

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

    High: 95 °F

    Hot

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 75.

    Low: 75 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 75. South wind around 8 mph, with gusts as high as 17 mph.
Monday
Partly sunny, with a high near 93. Heat index values as high as 106. South wind 9 to 15 mph, with gusts as high as 23 mph.
Monday Night
Partly cloudy, with a low around 77. South southwest wind 8 to 11 mph, with gusts as high as 21 mph.
Tuesday
Sunny and hot, with a high near 95. Heat index values as high as 106. South southwest wind 9 to 13 mph, with gusts as high as 21 mph.
Tuesday Night
Clear, with a low around 74. South southwest wind 7 to 11 mph, with gusts as high as 20 mph.
Wednesday
Sunny, with a high near 94. South southwest wind 7 to 10 mph, with gusts as high as 18 mph.
Wednesday Night
Mostly clear, with a low around 75. South wind 6 to 9 mph, with gusts as high as 15 mph.
Thursday
Sunny and hot, with a high near 95.
Thursday Night
Partly cloudy, with a low around 75.
Friday
A 30 percent chance of showers before 1pm. Sunny, with a high near 92.
Friday Night
Mostly clear, with a low around 74.
Independence Day
Mostly sunny, with a high near 92.
Saturday Night
Partly cloudy, with a low around 73.
Sunday
A chance of showers and thunderstorms. Mostly sunny, with a high near 89.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles WSW Jacksonville Municipal Airport IL
 39.77°N 90.29°W (Elev. 600 ft)
1:26 am CDT Jun 29, 2026
2am CDT Jun 29, 2026-6pm CDT Jul 5, 2026
 
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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