


Current conditions at
Marion - Williamson County Regional Airport (KMWA)
Lat: 37.77°NLon: 89.01°WElev: 486ft.
Fair
63°F
17°C
Humidity | 93% |
Wind Speed | Calm |
Barometer | 30.07 in |
Dewpoint | 61°F (16°C) |
Visibility | 10.00 mi |
Last update | 1 Oct 1:55 am CDT |
Extended Forecast for
Johnston City IL
Overnight
Low: 59 °F
Partly Cloudy
Wednesday
High: 87 °F
Mostly Sunny
Wednesday Night
Low: 63 °F
Partly Cloudy
Thursday
High: 88 °F
Mostly Sunny
Thursday Night
Low: 64 °F
Mostly Clear
Friday
High: 87 °F
Sunny
Friday Night
Low: 59 °F
Clear
Saturday
High: 85 °F
Sunny
Saturday Night
Low: 60 °F
Clear
Detailed Forecast
Overnight
Partly cloudy, with a low around 59. Calm wind.
Wednesday
Mostly sunny, with a high near 87. Calm wind becoming east 5 to 7 mph in the morning.
Wednesday Night
Partly cloudy, with a low around 63. Light east wind.
Thursday
Mostly sunny, with a high near 88. Calm wind becoming southeast around 5 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 64. Calm wind.
Friday
Sunny, with a high near 87. Calm wind becoming south southwest around 6 mph in the morning.
Friday Night
Clear, with a low around 59. Calm wind.
Saturday
Sunny, with a high near 85. Calm wind becoming south 5 to 8 mph in the morning.
Saturday Night
Clear, with a low around 60. South southeast wind 3 to 5 mph.
Sunday
Sunny, with a high near 84. South wind 5 to 10 mph.
Sunday Night
Mostly clear, with a low around 63. Light south southeast wind.
Monday
Mostly sunny, with a high near 84. South southeast wind 3 to 6 mph.
Monday Night
Partly cloudy, with a low around 63. Light southeast wind.
Tuesday
A slight chance of showers. Mostly sunny, with a high near 83. Southwest wind 3 to 7 mph.
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ABOUT THIS FORECAST
Point Forecast:
Johnston City IL
37.82°N 88.91°W
37.82°N 88.91°W
1:30 am CDT Oct 1, 2025
2am CDT Oct 1, 2025-6pm CDT Oct 7, 2025