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Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

Mostly Cloudy

72°F

22°C

Humidity 94%
Wind Speed NW 5 mph
Barometer 30.00 in (1015.6 mb)
Dewpoint 70°F (21°C)
Visibility 8.00 mi
Last update 15 Jun 12:52 am CDT
Extended Forecast for

2 Miles N Saint Johns IL

  • Overnight

    Overnight: Patchy fog after 3am. Otherwise, partly cloudy, with a low around 67. North wind 3 to 5 mph.

    Low: 67 °F

    Patchy Fog

  • Sunday

    Sunday: Patchy fog before 8am. Otherwise, partly sunny, with a high near 84. North wind around 5 mph.

    High: 84 °F

    Patchy Fog
    then Mostly
    Cloudy

  • Sunday Night

    Sunday Night: A 30 percent chance of showers after 4am. Mostly cloudy, with a low around 68. Light and variable wind.

    Low: 68 °F

    Mostly Cloudy
    then Chance
    Showers

  • Monday

    Monday: A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly cloudy, with a high near 83. Light south wind.

    High: 83 °F

    Chance
    Showers then
    Chance
    T-storms

  • Monday Night

    Monday Night: A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Light south wind. Chance of precipitation is 20%.

    Low: 70 °F

    Slight Chance
    T-storms

  • Tuesday

    Tuesday: A slight chance of showers, then a chance of showers and thunderstorms after 7am. Partly sunny, with a high near 87. South southwest wind 6 to 9 mph. Chance of precipitation is 40%.

    High: 87 °F

    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 73. South southwest wind 6 to 8 mph.

    Low: 73 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 88. South southwest wind 10 to 15 mph, with gusts as high as 22 mph.

    High: 88 °F

    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 72. Southwest wind 6 to 10 mph.

    Low: 72 °F

    Showers
    Likely

Detailed Forecast

Overnight
Patchy fog after 3am. Otherwise, partly cloudy, with a low around 67. North wind 3 to 5 mph.
Sunday
Patchy fog before 8am. Otherwise, partly sunny, with a high near 84. North wind around 5 mph.
Sunday Night
A 30 percent chance of showers after 4am. Mostly cloudy, with a low around 68. Light and variable wind.
Monday
A 40 percent chance of showers and thunderstorms, mainly after 1pm. Mostly cloudy, with a high near 83. Light south wind.
Monday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 70. Light south wind. Chance of precipitation is 20%.
Tuesday
A slight chance of showers, then a chance of showers and thunderstorms after 7am. Partly sunny, with a high near 87. South southwest wind 6 to 9 mph. Chance of precipitation is 40%.
Tuesday Night
A 30 percent chance of showers and thunderstorms, mainly after 1am. Partly cloudy, with a low around 73. South southwest wind 6 to 8 mph.
Wednesday
A chance of showers and thunderstorms, mainly after 1pm. Partly sunny, with a high near 88. South southwest wind 10 to 15 mph, with gusts as high as 22 mph.
Wednesday Night
Showers likely and possibly a thunderstorm before 1am, then a chance of showers and thunderstorms after 1am. Mostly cloudy, with a low around 72. Southwest wind 6 to 10 mph.
Juneteenth
A chance of showers and thunderstorms, mainly after 1pm. Sunny, with a high near 88. West northwest wind around 7 mph.
Thursday Night
Mostly clear, with a low around 69. Light and variable wind.
Friday
Sunny, with a high near 90. Calm wind becoming south southwest 5 to 7 mph in the afternoon.
Friday Night
Mostly clear, with a low around 73. South wind around 6 mph.
Saturday
Sunny, with a high near 92. South southwest wind 6 to 9 mph.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles N Saint Johns IL
 38.06°N 89.24°W
Last Update:
11:16 pm CDT Jun 14, 2025
Forecast Valid:
1am CDT Jun 15, 2025-6pm CDT Jun 21, 2025
 
Forecast Discussion
 
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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