Caldwell Weather Forecast

    • 66
    • 79

    Rain Showers

    • 64
    • 80

    Chance Rain Showers

    • 53
    • 74

    Mostly Sunny

    • 56
    • 73

    Mostly Sunny

    • 61
    • 78

    Slight Chance Rain Showers

    • 64
    • 82

    Chance Rain Showers

Today 12 Sep Western Essex

Partly sunny. Highs around 80. Southeast Winds 5 to 10 Mph with Gusts up to 20 Mph.

Tonight 12 Sep Western Essex

Mostly cloudy. Showers likely with a chance of Thunderstorms after midnight. Some Thunderstorms may produce heavy rainfall after midnight. Lows in the mid 60s. Southeast Winds 5 to 10 Mph. Gusts up to 20 Mph in the evening. Chance of rain 60 percent.

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Caldwell Temperature Statistics

September Temperature

Caldwell, Essex County Airport (2.5 miles)

  • Lowest 7 September, 2026

    55 °F

  • Average September

    72 °F

  • Highest 3 September, 2026

    86 °F

Climate (2021–2026)

Caldwell, Essex County Airport (2.5 miles)

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  • Average Low 2021–2026

    46.7 °F

  • Average 2021–2026

    55.9 °F

  • Average High 2021–2026

    65.1 °F
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