Old Mastic Weather Forecast

    • 33
    • 45

    Rain

    • 14
    • 38

    Partly Sunny

    • 34
    • 36

    Chance Rain/Snow

    • 31
    • 48

    Mostly Cloudy

    • 27
    • 39

    Partly Sunny

    • 32
    • 40

    Chance Rain/Snow

Today 31 Jan Southeast Suffolk

Rain. Highs in the mid 40s. Southwest Winds 15 to 20 Mph, becoming west around 5 Mph in the afternoon. Chance of rain 90 percent.

Tonight 31 Jan Southeast Suffolk

Rain, mainly in the evening. Lows in the lower 30s. Southwest Winds 5 to 10 Mph, becoming northwest 10 to 15 Mph after midnight. Chance of rain 80 percent.

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Old Mastic Temperature Statistics

January Temperature

Shirley, Brookhaven Airport (3.1 miles)

  • Lowest 23 January, 2025

    4.7 °F

  • Average January

    30.4 °F

  • Highest 1 January, 2025

    54.6 °F

Climate (2020–Present)

Shirley, Brookhaven Airport (3.1 miles)

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  • Average Low 2020–2025

    46.7 °F

  • Average 2020–2025

    54.9 °F

  • Average High 2020–2025

    62.9 °F
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