Trenton Weather Forecast

    • 69
    • 97

    Slight Chance Thunderstorms

    • 67
    • 93

    Partly Sunny

    • 65
    • 94

    Mostly Sunny

    • 66
    • 93

    Partly Sunny

    • 64
    • 88

    Chance Rain Showers

    • 61
    • 87

    Slight Chance Thunderstorms

Today 14 Sep Clinton

Sunny. A slight chance of Showers and Thunderstorms in the afternoon. Hot with Highs in the upper 90s. West Winds around 5 Mph, becoming north around 5 Mph in the afternoon. Chance of rain 20 percent.

Tonight 14 Sep Clinton

Mostly clear. A slight chance of Showers and Thunderstorms in the evening. Lows in the upper 60s. Northeast Winds around 5 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Trenton Temperature Statistics

September Temperature

Belleville, Scott AFB/MidAmerica Airport (9.3 miles)

  • Lowest 8 September, 2025

    44.6 °F

  • Average September

    67.4 °F

  • Highest 11 September, 2025

    90.3 °F

Climate (2020–Present)

Belleville, Scott AFB/MidAmerica Airport (9.3 miles)

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  • Average Low 2020–2025

    47.3 °F

  • Average 2020–2025

    57.2 °F

  • Average High 2020–2025

    67.3 °F
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