Mastic Weather Forecast

    • 66
    • 88

    Mostly Sunny

    • 65
    • 84

    Rain Showers Likely

    • 61
    • 82

    Partly Sunny

    • 62
    • 78

    Partly Sunny

    • 64
    • 75

    Partly Sunny

    • 68
    • 82

    Chance Rain Showers

Today 13 Jun Southeast Suffolk

Sunny. Highs in the lower 80s. Northwest Winds 5 to 10 Mph. Gusts up to 20 Mph this afternoon.

Tonight 13 Jun Southeast Suffolk

Mostly clear. Lows in the mid 60s. Southwest Winds 5 to 10 Mph.

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Mastic Temperature Statistics

June Temperature

Shirley, Brookhaven Airport (1.9 miles)

  • Lowest 2 June, 2026

    43 °F

  • Average June

    66 °F

  • Highest 7 June, 2026

    84 °F

Climate (2021–Present)

Shirley, Brookhaven Airport (1.9 miles)

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  • Average Low 2021–2026

    46.1 °F

  • Average 2021–2026

    54.5 °F

  • Average High 2021–2026

    62.5 °F
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