Hazardous Weather Conditions
Current conditions at
Marion - Williamson County Regional Airport (KMWA)
Lat: 37.77°NLon: 89.01°WElev: 486ft.
Mostly Cloudy
81°F
27°C
| Humidity | 58% |
| Wind Speed | S 16 G 28 mph |
| Barometer | 30.02 in |
| Dewpoint | 64°F (18°C) |
| Visibility | 10.00 mi |
| Heat Index | 83°F (28°C) |
| Last update | 3 Apr 3:47 pm CDT |
Extended Forecast for
Johnston City IL
This Afternoon
High: 83 °F
Slight Chance
T-stormsTonight
Low: 61 °F
Slight Chance
T-storms then
Chance
T-stormsSaturday
High: 70 °F⇓
Showers
Saturday Night
Low: 40 °F
Decreasing
CloudsSunday
High: 61 °F
Sunny
Sunday Night
Low: 39 °F
Clear
Monday
High: 66 °F
Sunny
Monday Night
Low: 40 °F
Partly Cloudy
Tuesday
High: 59 °F
Mostly Sunny
Detailed Forecast
This Afternoon
A 20 percent chance of showers and thunderstorms. Partly sunny, with a high near 83. South southwest wind around 15 mph, with gusts as high as 23 mph.
Tonight
A 50 percent chance of showers and thunderstorms, mainly after 2am. Mostly cloudy, with a low around 61. South wind 10 to 14 mph, with gusts as high as 23 mph.
Saturday
Showers and possibly a thunderstorm before 3pm, then a chance of showers. Temperature falling to around 59 by 5pm. Southwest wind 11 to 14 mph becoming west northwest in the afternoon. Winds could gust as high as 23 mph. Chance of precipitation is 100%.
Saturday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 40. West northwest wind 6 to 10 mph.
Sunday
Sunny, with a high near 61. Northwest wind 6 to 10 mph, with gusts as high as 18 mph.
Sunday Night
Clear, with a low around 39. Northwest wind around 6 mph becoming calm in the evening.
Monday
Sunny, with a high near 66. Light west wind becoming northwest 5 to 9 mph in the morning.
Monday Night
Partly cloudy, with a low around 40. North northeast wind 6 to 8 mph.
Tuesday
Mostly sunny, with a high near 59. East northeast wind 8 to 10 mph.
Tuesday Night
Partly cloudy, with a low around 41. East wind around 7 mph.
Wednesday
Partly sunny, with a high near 73. South wind 7 to 13 mph, with gusts as high as 18 mph.
Wednesday Night
Mostly clear, with a low around 53. South wind 8 to 10 mph, with gusts as high as 18 mph.
Thursday
Sunny, with a high near 76. South wind 11 to 14 mph, with gusts as high as 22 mph.
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Johnston City IL
37.82°N 88.91°W
37.82°N 88.91°W
1:27 pm CDT Apr 3, 2026
4pm CDT Apr 3, 2026-6pm CDT Apr 9, 2026
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