Current conditions at
Marion - Williamson County Regional Airport (KMWA)
Lat: 37.77°NLon: 89.01°WElev: 486ft.
Fair
63°F
17°C
| Humidity | 52% |
| Wind Speed | W 12 mph |
| Barometer | 29.93 in |
| Dewpoint | 45°F (7°C) |
| Visibility | 10.00 mi |
| Last update | 5 Nov 10:45 am CST |
Extended Forecast for
Johnston City IL
This Afternoon
High: 66 °F
Sunny
Tonight
Low: 44 °F
Increasing
CloudsFriday
High: 58 °F
Decreasing
CloudsFriday Night
Low: 33 °F
Mostly Clear
Saturday
High: 56 °F
Sunny
Saturday Night
Low: 33 °F
Mostly Clear
Sunday
High: 59 °F
Sunny
Sunday Night
Low: 34 °F
Clear
Monday
High: 65 °F
Sunny
Detailed Forecast
This Afternoon
Sunny, with a high near 66. West southwest wind 5 to 9 mph, with gusts as high as 18 mph.
Tonight
Increasing clouds, with a low around 44. Calm wind becoming northwest around 6 mph after midnight.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 58. North northwest wind 7 to 11 mph.
Friday Night
Mostly clear, with a low around 33. North wind around 6 mph becoming calm in the evening.
Saturday
Sunny, with a high near 56. Calm wind becoming north around 5 mph.
Saturday Night
Mostly clear, with a low around 33. Calm wind.
Sunday
Sunny, with a high near 59. Calm wind becoming west northwest around 5 mph.
Sunday Night
Clear, with a low around 34. Calm wind.
Monday
Sunny, with a high near 65. Calm wind becoming southwest around 5 mph.
Monday Night
Clear, with a low around 38. Calm wind.
Tuesday
Sunny, with a high near 66. Calm wind becoming west around 5 mph.
Tuesday Night
Mostly clear, with a low around 40. Calm wind.
Veterans Day
Mostly sunny, with a high near 67. Calm wind becoming northwest around 6 mph.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
Johnston City IL
37.82°N 88.91°W
37.82°N 88.91°W
10:41 am CST Nov 5, 2026
12pm CST Nov 5, 2026-6pm CST Nov 11, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
