Allamuchy Mountain Park Weather Forecast

    • 50
    • 80

    Mostly Sunny

    • 56
    • 70

    Chance Rain Showers

    • 56
    • 67

    Rain Showers

    • 50
    • 63

    Chance Rain Showers

    • 47
    • 61

    Chance Rain Showers

    • 48
    • 60

    Chance Rain Showers

    • 49
    • 61

    Chance Rain Showers

Today 18 Sep Sussex

Partly sunny. A chance of Showers in the morning. Highs in the mid 60s. Chance of rain 30 percent.

Tonight 18 Sep Sussex

Mostly clear this Evening, then becoming partly cloudy. Cooler with Lows around 50. North Winds 5 to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Allamuchy Mountain Park Temperature Statistics

September Temperature

Andover, Aeroflex-Andover Airport (5 miles)

  • Lowest 15 September, 2026

    46.9 °F

  • Average September

    68.1 °F

  • Highest 3 September, 2026

    86 °F

Climate (2021–2026)

Andover, Aeroflex-Andover Airport (5 miles)

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  • Average Low 2021–2026

    43.7 °F

  • Average 2021–2026

    53.5 °F

  • Average High 2021–2026

    63.6 °F
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