Belle Terre Weather Forecast

    • 69
    • 79

    Becoming Sunny

    • 70
    • 79

    Rain Showers

    • 71
    • 80

    Rain Showers Likely

    • 69
    • 81

    Mostly Sunny

    • 71
    • 84

    Chance Rain Showers

    • 67
    • 81

    Chance Rain Showers

    • 66
    • 78

    Partly Sunny

Today 15 Aug Northwest Suffolk

Sunny. Highs in the lower 80s. North Winds around 5 Mph.

Tonight 15 Aug Northwest Suffolk

Mostly clear. Lows in the mid 60s. Southwest Winds around 5 Mph, becoming north after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Belle Terre Temperature Statistics

August Temperature

Islip, Long Island Mac Arthur Airport (11.2 miles)

  • Lowest 4 August, 2026

    63.6 °F

  • Average August

    78.4 °F

  • Highest 7 August, 2026

    91.7 °F

Climate (2021–2026)

Islip, Long Island Mac Arthur Airport (11.2 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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