Belle Terre Weather Forecast

    • 66
    • 80

    Mostly Cloudy

    • 65
    • 80

    Partly Sunny

    • 67
    • 83

    Mostly Sunny

    • 71
    • 85

    Slight Chance Thunderstorms

    • 74
    • 88

    Slight Chance Thunderstorms

    • 75
    • 92

    Slight Chance Thunderstorms

Today 27 Jun Northwest Suffolk

Mostly cloudy with a 50 percent chance of Showers. Highs in the lower 80s. South Winds 5 to 10 Mph.

Tonight 27 Jun Northwest Suffolk

Mostly cloudy with a 40 percent chance of Showers. Lows in the mid 60s. Southwest Winds 5 to 10 Mph, becoming northeast after midnight.

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Belle Terre Temperature Statistics

June Temperature

Islip, Long Island Mac Arthur Airport (11.2 miles)

  • Lowest 2 June, 2026

    46.7 °F

  • Average June

    71.3 °F

  • Highest 12 June, 2026

    94.6 °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 °F
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