Callahans Beach Weather Forecast

    • 44
    • 52

    Breezy

    • 28
    • 55

    Rain

    • 35
    • 43

    Mostly Cloudy

    • 27
    • 46

    Partly Sunny

    • 26
    • 35

    Partly Sunny

    • 32
    • 41

    Chance Rain/Snow

Today 18 Dec Northwest Suffolk

Mostly sunny. Highs in the lower 50s. Southeast Winds 5 to 10 Mph.

Tonight 18 Dec Northwest Suffolk

A chance of rain in the Evening, then rain with a slight chance of Thunderstorms after midnight. Windy and not as cool with Lows in the lower 40s. South Winds 10 to 15 Mph with Gusts up to 25 Mph, increasing to 20 to 30 Mph with Gusts up to 45 Mph after midnight. Chance of rain near 100 percent.

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Callahans Beach Temperature Statistics

December Temperature

Islip, Long Island Mac Arthur Airport (12.4 miles)

  • Lowest 15 December, 2025

    19.9 °F

  • Average December

    34 °F

  • Highest 10 December, 2025

    50 °F

Climate (2020–Present)

Islip, Long Island Mac Arthur Airport (12.4 miles)

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  • Average Low 2020–2025

    47.4 °F

  • Average 2020–2025

    55.2 °F

  • Average High 2020–2025

    63.1 °F
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