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

Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Fog/Mist

48°F

9°C

Humidity 96%
Wind Speed E 6 mph
Barometer 30.15 in (1020.9 mb)
Dewpoint 47°F (8°C)
Visibility 5.00 mi
Wind Chill45°F (7°C)
Last update 20 Nov 1:52 am CST
Extended Forecast for

Carbondale IL

  • Overnight

    Overnight: A 20 percent chance of showers after 5am. Areas of fog before 5am. Otherwise, cloudy, with a low around 48. Calm wind.

    Low: 48 °F

    Slight Chance
    Showers and
    Areas Fog

  • Thursday

    Thursday: Showers, mainly before 3pm. Patchy fog before 10am, then patchy fog after 5pm. High near 59. Calm wind becoming southeast around 6 mph. Chance of precipitation is 90%.

    High: 59 °F

    Showers and
    Patchy Fog

  • Thursday Night

    Thursday Night: Showers, with thunderstorms also possible after 3am. Patchy fog. Low around 54. Calm wind. Chance of precipitation is 90%.

    Low: 54 °F

    Showers and
    Patchy Fog

  • Friday

    Friday: Showers and possibly a thunderstorm. High near 68. Calm wind becoming south 5 to 7 mph in the morning. Chance of precipitation is 100%.

    High: 68 °F

    Showers

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm before midnight, then a slight chance of showers. Mostly cloudy, with a low around 49. West northwest wind around 6 mph becoming north after midnight. Chance of precipitation is 70%.

    Low: 49 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 59. North wind 3 to 6 mph.

    High: 59 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 40. Calm wind.

    Low: 40 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 63. Light south southwest wind.

    High: 63 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: A chance of showers, mainly after midnight. Mostly cloudy, with a low around 44. Calm wind.

    Low: 44 °F

    Chance
    Showers

Detailed Forecast

Overnight
A 20 percent chance of showers after 5am. Areas of fog before 5am. Otherwise, cloudy, with a low around 48. Calm wind.
Thursday
Showers, mainly before 3pm. Patchy fog before 10am, then patchy fog after 5pm. High near 59. Calm wind becoming southeast around 6 mph. Chance of precipitation is 90%.
Thursday Night
Showers, with thunderstorms also possible after 3am. Patchy fog. Low around 54. Calm wind. Chance of precipitation is 90%.
Friday
Showers and possibly a thunderstorm. High near 68. Calm wind becoming south 5 to 7 mph in the morning. Chance of precipitation is 100%.
Friday Night
Showers likely and possibly a thunderstorm before midnight, then a slight chance of showers. Mostly cloudy, with a low around 49. West northwest wind around 6 mph becoming north after midnight. Chance of precipitation is 70%.
Saturday
Mostly sunny, with a high near 59. North wind 3 to 6 mph.
Saturday Night
Mostly clear, with a low around 40. Calm wind.
Sunday
Mostly sunny, with a high near 63. Light south southwest wind.
Sunday Night
A chance of showers, mainly after midnight. Mostly cloudy, with a low around 44. Calm wind.
Monday
A chance of showers. Mostly cloudy, with a high near 60. Calm wind becoming south southeast 5 to 7 mph in the morning.
Monday Night
Showers. Mostly cloudy, with a low around 50. South southeast wind around 7 mph.
Tuesday
A chance of showers. Partly sunny, with a high near 62. South southwest wind 7 to 9 mph becoming west in the afternoon.
Tuesday Night
Partly cloudy, with a low around 43. West wind 3 to 6 mph.
Wednesday
Partly sunny, with a high near 54. Northwest wind 6 to 8 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Carbondale IL
 37.72°N 89.23°W
Last Update:
1:36 am CST Nov 20, 2025
Forecast Valid:
1am CST Nov 20, 2025-6pm CST Nov 26, 2025
 
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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