Lake Montauk Weather Forecast

    • 62
    • 74

    Chance Rain Showers

    • 58
    • 70

    Slight Chance Rain Showers

    • 62
    • 77

    Mostly Sunny

    • 68
    • 77

    Partly Sunny

    • 71
    • 75

    Chance Rain Showers

    • 64
    • 78

    Partly Sunny

    • 62
    • 70

    Mostly Sunny

Today 5 Sep Southeast Suffolk

Sunny. Isolated Showers this afternoon. Highs in the mid 70s. North Winds 5 to 10 Mph. Chance of rain 20 percent.

Tonight 5 Sep Southeast Suffolk

Mostly cloudy. A chance of Showers, mainly this evening. Lows in the lower 60s. East Winds 5 to 10 Mph. Chance of rain 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lake Montauk Temperature Statistics

September Temperature

Montauk, Montauk Airport (0.6 miles)

  • Lowest 1 September, 2026

    64 °F

  • Average September

    70.1 °F

  • Highest 3 September, 2026

    78.1 °F

Climate (2021–2026)

Montauk, Montauk Airport (0.6 miles)

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  • Average Low 2021–2026

    49.5 °F

  • Average 2021–2026

    55.6 °F

  • Average High 2021–2026

    61.5 °F
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