Heavy Rainfall Threat for Portions of Mid-Atlantic and Northeast; Heat Linger for Southeast and Expands for the West

Moisture and nearby frontal boundary will focus more showers and thunderstorms for portions of the Mid-Atlantic and Northeast today. Rainfall could be locally heavy resulting instances of flash flooding. Meanwhile, the heat lingers for areas of the Southeast and expands across the Western U.S. the next several days. Between these areas, severe thunderstorms possible for the Plains and Midwest. Read More >

Hazardous Weather Conditions

Current conditions at

Southern Illinois Airport (KMDH)

Lat: 37.78°NLon: 89.25°WElev: 400ft.

A Few Clouds

77°F

25°C

Humidity 85%
Wind Speed Calm
Barometer 30.01 in (1015.7 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 6 Jul 9:52 am CDT
Extended Forecast for

3 Miles NNE Pomona IL

  • Today

    Today: A slight chance of showers and thunderstorms before 11am, then a slight chance of showers and thunderstorms after 4pm.  Partly sunny, with a high near 86. North wind 3 to 5 mph.  Chance of precipitation is 20%.

    High: 86 °F

    Slight Chance
    T-storms

  • Tonight

    Tonight: Patchy fog after 3am.  Otherwise, mostly cloudy, with a low around 70. North wind around 5 mph becoming calm  in the evening.

    Low: 70 °F

    Partly Cloudy
    then Patchy
    Fog

  • Tuesday

    Tuesday: A 30 percent chance of showers and thunderstorms, mainly between 1pm and 5pm.  Patchy fog before 8am.  Otherwise, partly sunny, with a high near 86. Calm wind becoming north around 5 mph.

    High: 86 °F

    Patchy Fog
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A 10 percent chance of showers and thunderstorms before 7pm.  Partly cloudy, with a low around 69. Calm wind.

    Low: 69 °F

    Slight Chance
    T-storms then
    Partly Cloudy

  • Wednesday

    Wednesday: A 40 percent chance of showers and thunderstorms after 1pm.  Mostly sunny, with a high near 89. Calm wind.

    High: 89 °F

    Mostly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 71. Light south wind.

    Low: 71 °F

    Mostly Clear

  • Thursday

    Thursday: A 30 percent chance of showers and thunderstorms after 1pm.  Sunny, with a high near 93. South southwest wind 5 to 8 mph.

    High: 93 °F

    Sunny then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms after 1am.  Partly cloudy, with a low around 75. South southwest wind 6 to 8 mph.

    Low: 75 °F

    Mostly Clear
    then Chance
    T-storms

  • Friday

    Friday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm.  Partly sunny, with a high near 91. Southwest wind 6 to 8 mph.

    High: 91 °F

    Chance
    T-storms then
    Showers
    Likely

Detailed Forecast

Today
A slight chance of showers and thunderstorms before 11am, then a slight chance of showers and thunderstorms after 4pm. Partly sunny, with a high near 86. North wind 3 to 5 mph. Chance of precipitation is 20%.
Tonight
Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 70. North wind around 5 mph becoming calm in the evening.
Tuesday
A 30 percent chance of showers and thunderstorms, mainly between 1pm and 5pm. Patchy fog before 8am. Otherwise, partly sunny, with a high near 86. Calm wind becoming north around 5 mph.
Tuesday Night
A 10 percent chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 69. Calm wind.
Wednesday
A 40 percent chance of showers and thunderstorms after 1pm. Mostly sunny, with a high near 89. Calm wind.
Wednesday Night
Mostly clear, with a low around 71. Light south wind.
Thursday
A 30 percent chance of showers and thunderstorms after 1pm. Sunny, with a high near 93. South southwest wind 5 to 8 mph.
Thursday Night
A chance of showers and thunderstorms after 1am. Partly cloudy, with a low around 75. South southwest wind 6 to 8 mph.
Friday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1pm. Partly sunny, with a high near 91. Southwest wind 6 to 8 mph.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 73. South southwest wind around 6 mph becoming calm in the evening.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 89. Calm wind becoming south southwest around 5 mph in the morning.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 72. Light south southwest wind.
Sunday
A slight chance of showers and thunderstorms. Mostly sunny, with a high near 89. Calm wind becoming west northwest around 5 mph.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles NNE Pomona IL
 37.68°N 89.32°W
10:31 am CDT Jul 6, 2026
10am CDT Jul 6, 2026-6pm CDT Jul 12, 2026
 
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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