Trenton Weather Forecast

    • 64
    • 89

    Rain Showers

    • 60
    • 74

    Rain Showers

    • 58
    • 80

    Mostly Sunny

    • 61
    • 84

    Partly Sunny

    • 63
    • 87

    Partly Sunny

    • 65
    • 86

    Mostly Cloudy

Today 31 Jul Mercer

Mostly sunny with a slight chance of Showers this Morning, then mostly cloudy with Showers and Thunderstorms likely this afternoon. Some Thunderstorms may produce heavy rainfall this afternoon. Locally heavy rainfall possible this afternoon. Not as hot with Highs in the upper 80s. Temperature falling to around 80 this afternoon. East Winds 5 to 10 Mph. Chance of rain 70 percent.

Tonight 31 Jul Mercer

Showers with Thunderstorms likely in the Evening, then Showers likely with a slight chance of Thunderstorms after midnight. Some Thunderstorms may produce heavy rainfall in the evening. Some Thunderstorms may produce heavy rainfall after midnight. Locally heavy rainfall possible. Cooler with Lows in the lower 60s. Northeast Winds 5 to 10 Mph. Chance of rain 90 percent.

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Trenton Temperature Statistics

July Temperature

Trenton, Mercer County Airport (5.6 miles)

  • Lowest 5 July, 2025

    59.6 °F
  • Average July

    78.6 °F
  • Highest 25 July, 2025

    97.6 °F

Climate (2020–Present)

Trenton, Mercer County Airport (5.6 miles)

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  • Average Low 2020–2025

    46.3 °F
  • Average 2020–2025

    55.4 °F
  • Average High 2020–2025

    64.4 °F
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