Hazardous Weather Conditions
Current conditions at
Marion - Williamson County Regional Airport (KMWA)
Lat: 37.77°NLon: 89.01°WElev: 486ft.
Partly Cloudy
95°F
35°C
| Humidity | 50% |
| Wind Speed | S 9 mph |
| Barometer | 30.09 in |
| Dewpoint | 73°F (23°C) |
| Visibility | 10.00 mi |
| Heat Index | 105°F (41°C) |
| Last update | 2 Jul 3:45 pm CDT |
Extended Forecast for
2 Miles ESE Herrin IL
Heat Advisory July 3, 08:00pm until July 4, 08:00pm
Extreme Heat Warning July 2, 04:48pm until July 3, 08:00pm
NOW until 8:00pm Fri
Extreme Heat Warning
This Afternoon
High: 97 °F
Hot
Tonight
Low: 76 °F
Mostly Clear
Friday
High: 97 °F
Hot
Friday Night
Low: 76 °F
Mostly Clear
Independence Day
High: 96 °F
Mostly Sunny
then Chance
T-stormsSaturday Night
Low: 74 °F
Slight Chance
T-storms then
Chance
ShowersSunday
High: 94 °F
Chance
T-stormsSunday Night
Low: 73 °F
Chance
T-storms
Detailed Forecast
This Afternoon
Sunny and hot, with a high near 97. Heat index values as high as 107. South wind around 6 mph.
Tonight
Mostly clear, with a low around 76. Light and variable wind.
Friday
Sunny and hot, with a high near 97. Heat index values as high as 107. Calm wind becoming south southwest 5 to 7 mph in the afternoon.
Friday Night
Mostly clear, with a low around 76. South wind around 5 mph becoming calm in the evening.
Independence Day
A 30 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 96. Calm wind becoming south southwest around 6 mph in the afternoon.
Saturday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 74. Light and variable wind.
Sunday
A 30 percent chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 94. Light west southwest wind.
Sunday Night
A chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 73. Calm wind.
Monday
A chance of showers and thunderstorms, mainly after 1pm. Mostly sunny, with a high near 91. Calm wind becoming northwest around 5 mph in the afternoon.
Monday Night
A slight chance of showers and thunderstorms before 1am. Partly cloudy, with a low around 72. Light north wind.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 91. Calm wind becoming north around 5 mph in the afternoon.
Tuesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 72. Light north wind.
Wednesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 91. Light and variable wind.
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
2 Miles ESE Herrin IL
37.8°N 89°W
37.8°N 89°W
2:11 pm CDT Jul 2, 2026
4pm CDT Jul 2, 2026-6pm CDT Jul 8, 2026
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