South Mountain Reservation Weather Forecast

    • 43
    • 54

    Chance Rain Showers

    • 45
    • 57

    Chance Rain Showers

    • 48
    • 71

    Partly Sunny

    • 43
    • 61

    Chance Rain Showers

    • 42
    • 52

    Rain Showers Likely

    • 45
    • 59

    Slight Chance Rain Showers

    • 48
    • 62

    Chance Rain Showers

Today 21 Apr Western Essex

Mostly sunny. Highs in the mid 50s. Southwest Winds 5 to 10 Mph.

Tonight 21 Apr Western Essex

Mostly cloudy. A slight chance of Showers this Evening, then a chance of Showers after midnight. Not as cool with Lows in the lower 40s. South Winds 5 to 10 Mph. Gusts up to 20 Mph after midnight. Chance of rain 50 percent.

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South Mountain Reservation Temperature Statistics

April Temperature

Morristown Municipal (7.5 miles)

  • Lowest 9 April, 2026

    23 °F

  • Average April

    51.9 °F

  • Highest 16 April, 2026

    89.6 °F

Climate (2021–Present)

Morristown Municipal (7.5 miles)

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  • Average Low 2021–2026

    43.2 °F

  • Average 2021–2026

    51.9 °F

  • Average High 2021–2026

    64 °F
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