Hazardous Weather Conditions
Current conditions at
Marion - Williamson County Regional Airport (KMWA)
Lat: 37.77°NLon: 89.01°WElev: 486ft.
Overcast
60°F
16°C
| Humidity | 96% |
| Wind Speed | SW 12 G 21 mph |
| Barometer | 29.73 in |
| Dewpoint | 59°F (15°C) |
| Visibility | 10.00 mi |
| Last update | 9 Jan 2:35 am CST |
Extended Forecast for
Simpson IL
Wind Advisory until January 9, 03:00am
NOW until 3:00am Fri
Wind Advisory
Overnight
Low: 64 °F
Chance
ShowersFriday
High: 58 °F⇓
Mostly Cloudy
Friday Night
Low: 43 °F
Mostly Cloudy
then Chance
ShowersSaturday
High: 49 °F
Chance
Showers then
Mostly SunnySaturday Night
Low: 26 °F
Mostly Clear
Sunday
High: 38 °F
Sunny
Sunday Night
Low: 23 °F
Mostly Clear
Monday
High: 47 °F
Sunny
Detailed Forecast
Overnight
A 50 percent chance of showers and thunderstorms before 3am. Mostly cloudy, with a steady temperature around 64. Southwest wind 11 to 14 mph, with gusts as high as 31 mph.
Friday
Mostly cloudy, with a temperature falling to around 51 by 5pm. West wind 5 to 10 mph becoming north northeast in the afternoon. Winds could gust as high as 22 mph.
Friday Night
A 50 percent chance of showers, mainly after 2am. Cloudy, with a low around 43. Light northeast wind.
Saturday
A 30 percent chance of showers before noon. Cloudy through mid morning, then gradual clearing, with a high near 49. Light northwest wind increasing to 5 to 10 mph in the morning. Winds could gust as high as 20 mph.
Saturday Night
Mostly clear, with a low around 26. West northwest wind 3 to 7 mph.
Sunday
Sunny, with a high near 38. Northwest wind 5 to 10 mph becoming light west northwest in the afternoon. Winds could gust as high as 20 mph.
Sunday Night
Mostly clear, with a low around 23. Calm wind.
Monday
Sunny, with a high near 47. Light south southwest wind becoming southwest 5 to 10 mph in the morning. Winds could gust as high as 21 mph.
Monday Night
Mostly clear, with a low around 33. South southwest wind 3 to 6 mph.
Tuesday
Mostly sunny, with a high near 54. South southwest wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
A slight chance of showers. Mostly cloudy, with a low around 39. South southwest wind around 6 mph becoming calm after midnight.
Wednesday
A slight chance of showers. Mostly cloudy, with a high near 45. Calm wind becoming north northwest 5 to 8 mph in the morning.
Wednesday Night
Mostly cloudy, with a low around 25. North northwest wind 3 to 6 mph.
Thursday
Mostly sunny, with a high near 39. Light and variable wind becoming north northwest around 6 mph.
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Simpson IL
37.46°N 88.77°W
37.46°N 88.77°W
1:21 am CST Jan 9, 2026
2am CST Jan 9, 2026-6pm CST Jan 15, 2026
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