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June 21, 2026 Severe Storm Summary

Hazardous Weather Conditions

Current conditions at

Jacksonville Municipal Airport (KIJX)

Lat: 39.77°NLon: 90.24°WElev: 614ft.

Fair

72°F

22°C

Humidity	100%
Wind Speed	NE 6 mph
Barometer	29.90 in
Dewpoint	72°F (22°C)
Visibility	10.00 mi
Last update	27 Jun 10:35 pm CDT

More Information:

Local Forecast Office More Local Wx 3 Day History Hourly Weather Forecast

Extended Forecast for

4 Miles ESE Woodson IL

Heat Advisory June 28, 01:00pm until June 28, 07:00pm

Click here for hazard details and duration

Heat Advisory

Tonight
Low: 70 °F
Chance
Showers and
Patchy Fog
Sunday
High: 91 °F
Slight Chance
T-storms then
Sunny
Sunday Night
Low: 74 °F
Increasing
Clouds
Monday
High: 93 °F
Mostly Sunny
Monday Night
Low: 75 °F
Mostly Clear
Tuesday
High: 95 °F
Hot
Tuesday Night
Low: 75 °F
Clear
Wednesday
High: 94 °F
Sunny
Wednesday Night
Low: 74 °F
Mostly Clear

Detailed Forecast

Tonight

A chance of showers before midnight, then a slight chance of showers and thunderstorms after 3am. Patchy fog between midnight and 4am. Otherwise, mostly cloudy, with a low around 70. East southeast wind 3 to 5 mph. Chance of precipitation is 30%.

Sunday

A 20 percent chance of showers and thunderstorms before 8am. Cloudy through mid morning, then gradual clearing, with a high near 91. Heat index values as high as 103. South wind 6 to 13 mph, with gusts as high as 18 mph.

Sunday Night

Increasing clouds, with a low around 74. South wind 7 to 10 mph, with gusts as high as 18 mph.

Monday

Mostly sunny, with a high near 93. Heat index values as high as 105. South wind 8 to 13 mph, with gusts as high as 21 mph.

Monday Night

Mostly clear, with a low around 75. South wind 8 to 11 mph, with gusts as high as 18 mph.

Tuesday

Sunny and hot, with a high near 95. South wind 7 to 11 mph, with gusts as high as 18 mph.

Tuesday Night

Clear, with a low around 75. South wind 6 to 9 mph.

Wednesday

Sunny, with a high near 94.