National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Marion - Williamson County Regional Airport (KMWA)

Lat: 37.77°NLon: 89.01°WElev: 486ft.

Fair

55°F

13°C

Humidity 90%
Wind Speed Calm
Barometer 30.18 in
Dewpoint 52°F (11°C)
Visibility 10.00 mi
Last update 28 Aug 3:35 am CDT
Extended Forecast for

2 Miles NW Johnston City IL

  • Overnight

    Overnight: Partly cloudy, with a low around 57. Calm wind.

    Low: 57 °F

    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 84. Calm wind becoming south southwest around 5 mph.

    High: 84 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 59. Calm wind.

    Low: 59 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 88. Calm wind becoming east northeast around 6 mph in the afternoon.

    High: 88 °F

    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 59. East northeast wind 3 to 6 mph.

    Low: 59 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 85. Northeast wind 5 to 9 mph.

    High: 85 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 58. Northeast wind 3 to 7 mph.

    Low: 58 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 84. East northeast wind 5 to 10 mph.

    High: 84 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 59. East northeast wind 3 to 7 mph.

    Low: 59 °F

    Partly Cloudy

Detailed Forecast

Overnight
Partly cloudy, with a low around 57. Calm wind.
Thursday
Mostly sunny, with a high near 84. Calm wind becoming south southwest around 5 mph.
Thursday Night
Mostly clear, with a low around 59. Calm wind.
Friday
Sunny, with a high near 88. Calm wind becoming east northeast around 6 mph in the afternoon.
Friday Night
Partly cloudy, with a low around 59. East northeast wind 3 to 6 mph.
Saturday
Sunny, with a high near 85. Northeast wind 5 to 9 mph.
Saturday Night
Partly cloudy, with a low around 58. Northeast wind 3 to 7 mph.
Sunday
Mostly sunny, with a high near 84. East northeast wind 5 to 10 mph.
Sunday Night
Partly cloudy, with a low around 59. East northeast wind 3 to 7 mph.
Labor Day
Mostly sunny, with a high near 84. East northeast wind 3 to 7 mph.
Monday Night
Partly cloudy, with a low around 59. East northeast wind around 6 mph becoming calm in the evening.
Tuesday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 83. Calm wind becoming east northeast around 6 mph in the afternoon.
Tuesday Night
A slight chance of showers and thunderstorms. Partly cloudy, with a low around 61. Light and variable wind.
Wednesday
A slight chance of showers. Mostly sunny, with a high near 85. Calm wind becoming west 5 to 8 mph in the morning.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NW Johnston City IL
 37.85°N 88.94°W
Last Update:
3:01 am CDT Aug 28, 2025
Forecast Valid:
3am CDT Aug 28, 2025-6pm CDT Sep 3, 2025
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation