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Hazardous Weather Conditions
Current conditions at
Southern Illinois Airport (KMDH)
Lat: 37.78°NLon: 89.25°WElev: 400ft.
Fair
95°F
35°C
| Humidity | 46% |
| Wind Speed | E 6 mph |
| Barometer | 30.02 in (1016.1 mb) |
| Dewpoint | 71°F (22°C) |
| Visibility | 10.00 mi |
| Heat Index | 103°F (39°C) |
| Last update | 17 Aug 1:52 pm CDT |
Extended Forecast for
Ava IL
Heat Advisory August 17, 02:01pm until August 19, 07:00pm
NOW until 7:00pm Tue
Heat Advisory
This Afternoon
High: 99 °F
Slight Chance
T-stormsTonight
Low: 73 °F
Partly Cloudy
Monday
High: 96 °F
Sunny
Monday Night
Low: 74 °F
Mostly Clear
Tuesday
High: 96 °F
Chance
T-stormsTuesday Night
Low: 72 °F
Chance
T-stormsWednesday
High: 89 °F
Chance
Showers then
Chance
T-stormsWednesday Night
Low: 67 °F
Partly Cloudy
Detailed Forecast
This Afternoon
A 20 percent chance of showers and thunderstorms. Mostly sunny and hot, with a high near 99. East wind 3 to 5 mph.
Tonight
Partly cloudy, with a low around 73. Calm wind.
Monday
Sunny, with a high near 96. Heat index values as high as 106. Light south southeast wind.
Monday Night
Mostly clear, with a low around 74. Light east southeast wind.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 96. Calm wind becoming west around 5 mph in the afternoon.
Tuesday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 72. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%.
Wednesday
A chance of showers, with thunderstorms also possible after 10am. Partly sunny, with a high near 89. Light north wind increasing to 5 to 9 mph in the morning. Chance of precipitation is 30%.
Wednesday Night
Partly cloudy, with a low around 67. North northeast wind 6 to 8 mph.
Thursday
Mostly sunny, with a high near 86. North wind 6 to 9 mph.
Thursday Night
Mostly clear, with a low around 66. North northeast wind 5 to 7 mph becoming calm after midnight.
Friday
Sunny, with a high near 89. Calm wind becoming north northeast around 6 mph in the afternoon.
Friday Night
Mostly clear, with a low around 67. North northeast wind around 5 mph becoming calm in the evening.
Saturday
Sunny, with a high near 90. Calm wind becoming north northwest around 6 mph in the afternoon.
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Ava IL
37.89°N 89.5°W
37.89°N 89.5°W
1:15 pm CDT Aug 17, 2025
2pm CDT Aug 17, 2025-6pm CDT Aug 23, 2025
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