Cedar Beach Weather Forecast

    • 69
    • 72

    Chance Rain Showers

    • 69
    • 79

    Chance Rain Showers

    • 67
    • 77

    Mostly Sunny

    • 68
    • 77

    Mostly Sunny

    • 70
    • 78

    Chance Rain Showers

    • 70
    • 78

    Chance Rain Showers

Today 22 Aug Northwest Suffolk

Mostly cloudy with a 20 percent chance of Showers. Near steady temperature in the lower 70s. East Winds around 5 Mph.

Tonight 22 Aug Northwest Suffolk

Mostly cloudy. Patchy drizzle in the Evening, then Showers likely with a slight chance of Thunderstorms after midnight. Patchy fog. Lows in the mid 60s. East Winds around 5 Mph. Chance of rain 60 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Cedar Beach Temperature Statistics

August Temperature

Islip, Long Island Mac Arthur Airport (11.8 miles)

  • Lowest 4 August, 2026

    63.6 °F

  • Average August

    77.4 °F

  • Highest 7 August, 2026

    91.7 °F

Climate (2021–2026)

Islip, Long Island Mac Arthur Airport (11.8 miles)

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  • Average Low 2021–2026

    47.3 °F

  • Average 2021–2026

    55.2 °F

  • Average High 2021–2026

    63.1 °F
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