Hazardous Weather Conditions
Current conditions at
Marion - Williamson County Regional Airport (KMWA)
Lat: 37.77°NLon: 89.01°WElev: 486ft.
Mostly Cloudy
93°F
34°C
| Humidity | 63% |
| Wind Speed | SW 9 mph |
| Barometer | 29.93 in |
| Dewpoint | 79°F (26°C) |
| Visibility | 10.00 mi |
| Heat Index | 110°F (43°C) |
| Last update | 26 Jul 1:45 pm CDT |
Extended Forecast for
Colp IL
Extreme Heat Warning until July 28, 07:00pm
NOW until 7:00pm Tue

Extreme Heat Warning
This Afternoon

High: 95 °F
Slight Chance
T-stormsTonight
Low: 78 °F
Showers
Likely then
Chance
ShowersMonday

High: 99 °F
Hot
Monday Night

Low: 79 °F
Mostly Clear
Tuesday

High: 95 °F
Sunny
Tuesday Night
Low: 71 °F
Slight Chance
T-storms then
Slight Chance
ShowersWednesday

High: 90 °F
Sunny
Wednesday Night

Low: 66 °F
Clear
Detailed Forecast
This Afternoon
A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 95. Heat index values as high as 118. Calm wind becoming west southwest around 5 mph.
Tonight
Showers and thunderstorms likely, mainly before 2am. Mostly cloudy, then becoming mostly clear toward daybreak, with a low around 78. Calm wind. Chance of precipitation is 60%.
Monday
Sunny and hot, with a high near 99. Heat index values as high as 112. Calm wind becoming south southwest 5 to 8 mph in the afternoon.
Monday Night
Mostly clear, with a low around 79. South southwest wind 6 to 9 mph.
Tuesday
Sunny, with a high near 95. Northwest wind 6 to 10 mph.
Tuesday Night
A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am. Partly cloudy, with a low around 71. Northeast wind 3 to 8 mph. Chance of precipitation is 20%.
Wednesday
Sunny, with a high near 90. North wind 3 to 8 mph.
Wednesday Night
Clear, with a low around 66. North wind around 6 mph becoming calm in the evening.
Thursday
Sunny, with a high near 90. Calm wind becoming northeast around 6 mph in the afternoon.
Thursday Night
Partly cloudy, with a low around 68. East northeast wind around 5 mph becoming calm in the evening.
Friday
A slight chance of showers and thunderstorms. Partly sunny, with a high near 88. Calm wind becoming south around 6 mph in the afternoon.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 68. South wind around 6 mph becoming calm in the evening.
Saturday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 87. Calm wind becoming north 5 to 9 mph in the morning.
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ABOUT THIS FORECAST
Point Forecast:
Colp IL
37.83°N 89.08°W
37.83°N 89.08°W
1:21 pm CDT Jul 26, 2026
1pm CDT Jul 26, 2026-6pm CDT Aug 1, 2026



