Mahwah Weather Forecast

    • 25
    • 57

    Rain Showers

    • 29
    • 38

    Partly Sunny

    • 22
    • 44

    Partly Sunny

    • 25
    • 35

    Partly Sunny

    • 30
    • 38

    Chance Rain/Snow

    • 27
    • 42

    Mostly Cloudy

Today 19 Dec Western Bergen

Showers with a slight chance of Thunderstorms this Morning, then partly sunny with a chance of Showers this afternoon. Highs in the upper 50s. Temperature falling into the lower 40s this afternoon. South Winds 15 to 20 Mph, becoming west this afternoon. Gusts up to 40 Mph. Chance of rain near 100 percent.

Tonight 19 Dec Western Bergen

Partly cloudy in the Evening, then clearing. Lows in the mid 20s. West Winds 10 to 15 Mph. Gusts up to 45 Mph, decreasing to 30 Mph after midnight.

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Mahwah Temperature Statistics

December Temperature

Caldwell, Essex County Airport (16.2 miles)

  • Lowest 9 December, 2025

    12.9 °F

  • Average December

    30.1 °F

  • Highest 10 December, 2025

    44.1 °F

Climate (2020–Present)

Caldwell, Essex County Airport (16.2 miles)

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  • Average Low 2020–2025

    47 °F

  • Average 2020–2025

    56.2 °F

  • Average High 2020–2025

    65.4 °F
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