Great Swamp National Wildlife Refuge Weather Forecast

    • 58
    • 81

    Partly Sunny

    • 58
    • 76

    Chance Rain Showers

    • 59
    • 70

    Chance Rain Showers

    • 59
    • 81

    Mostly Sunny

    • 54
    • 84

    Mostly Sunny

    • 52
    • 72

    Mostly Sunny

    • 54
    • 74

    Partly Sunny

Today 15 Sep Morris

Partly sunny. Near steady temperature in the upper 70s. East Winds around 5 Mph.

Tonight 15 Sep Morris

Mostly cloudy in the Evening, then becoming partly cloudy. Patchy fog after midnight. Lows in the upper 50s. Southeast Winds around 5 Mph, becoming northeast after midnight.

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Great Swamp National Wildlife Refuge Temperature Statistics

September Temperature

Morristown Municipal (6.2 miles)

  • Lowest 8 September, 2025

    44.6 °F

  • Average September

    64.6 °F

  • Highest 5 September, 2025

    86 °F

Climate (2020–Present)

Morristown Municipal (6.2 miles)

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  • Average Low 2020–2025

    43.4 °F

  • Average 2020–2025

    51.9 °F

  • Average High 2020–2025

    64.3 °F
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