Allamuchy Mountain Park Weather Forecast

    • 21
    • 43

    Mostly Sunny

    • 27
    • 38

    Snow Likely

    • 32
    • 40

    Snow Likely

    • 27
    • 42

    Chance Rain

    • 34
    • 41

    Chance Rain

    • 32
    • 52

    Chance Rain

    • 31
    • 43

    Chance Rain

Today 21 Dec Sussex

Mostly sunny. Highs in the upper 30s. Temperature falling to around 30 this afternoon. West Winds 5 to 10 Mph with Gusts up to 30 Mph.

Tonight 21 Dec Sussex

Mostly clear. Cold with Lows in the lower 20s. Northwest Winds 10 to 15 Mph with Gusts up to 30 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Allamuchy Mountain Park Temperature Statistics

December Temperature

Andover, Aeroflex-Andover Airport (5 miles)

  • Lowest 9 December, 2025

    6.1 °F

  • Average December

    28.6 °F

  • Highest 19 December, 2025

    57 °F

Climate (2020–Present)

Andover, Aeroflex-Andover Airport (5 miles)

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  • Average Low 2020–2025

    44 °F

  • Average 2020–2025

    53.7 °F

  • Average High 2020–2025

    63.8 °F
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