Severe Weather and Heavy Rain from the Ohio Valley to the Mid-Atlantic; Heat Persists in the South-Central U.S.

Widespread strong thunderstorms with damaging winds and locally heavy rain are expected across portions of the Ohio Valley into southern Mid-Atlantic and Carolinas. Rounds of strong thunderstorms are expected to develop across the northern and central Plains. Sweltering heat remains most persistent across the South-Central Plains and Lower/Middle Mississippi Valley through next week. Read More >

Current conditions at

St. Louis Downtown Airport (KCPS)

Lat: 38.56°NLon: 90.15°WElev: 410ft.

Fair

79°F

26°C

Humidity 79%
Wind Speed NE 6 mph
Barometer 29.94 in (1013.3 mb)
Dewpoint 72°F (22°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 6 Sep 2:53 am CDT
Extended Forecast for

Trenton IL

  • Overnight

    Overnight: Partly cloudy, with a low around 72. Northeast wind around 5 mph.

    Low: 72 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 89. Northeast wind 6 to 9 mph.

    High: 89 °F

    Decreasing
    Clouds

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 63. Northeast wind 5 to 9 mph.

    Low: 63 °F

    Mostly Clear

  • Labor Day

    Labor Day: Sunny, with a high near 87. East wind 5 to 7 mph.

    High: 87 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 63. East wind around 5 mph becoming calm  in the evening.

    Low: 63 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 94.

    High: 94 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 73.

    Low: 73 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 97.

    High: 97 °F

    Hot

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am.  Partly cloudy, with a low around 71. Chance of precipitation is 60%.

    Low: 71 °F

    Chance
    T-storms then
    Showers
    Likely

Detailed Forecast

Overnight
Partly cloudy, with a low around 72. Northeast wind around 5 mph.
Sunday
Mostly cloudy, then gradually becoming sunny, with a high near 89. Northeast wind 6 to 9 mph.
Sunday Night
Mostly clear, with a low around 63. Northeast wind 5 to 9 mph.
Labor Day
Sunny, with a high near 87. East wind 5 to 7 mph.
Monday Night
Mostly clear, with a low around 63. East wind around 5 mph becoming calm in the evening.
Tuesday
Sunny, with a high near 94.
Tuesday Night
Mostly clear, with a low around 73.
Wednesday
Sunny and hot, with a high near 97.
Wednesday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Partly cloudy, with a low around 71. Chance of precipitation is 60%.
Thursday
A 50 percent chance of showers and thunderstorms, mainly before 1pm. Partly sunny, with a high near 85.
Thursday Night
A 20 percent chance of showers. Partly cloudy, with a low around 64.
Friday
A 20 percent chance of showers. Sunny, with a high near 86.
Friday Night
A 20 percent chance of showers and thunderstorms. Mostly clear, with a low around 64.
Saturday
A 20 percent chance of showers. Sunny, with a high near 90.
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ABOUT THIS FORECAST

 
Point Forecast:
Trenton IL
 38.6°N 89.69°W (Elev. 502 ft)
2:56 am CDT Sep 6, 2026
3am CDT Sep 6, 2026-6pm CDT Sep 12, 2026
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

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