Islip Weather Forecast

    • 57
    • 71

    Mostly Sunny

    • 64
    • 70

    Partly Sunny

    • 57
    • 78

    Partly Sunny

    • 52
    • 66

    Rain Showers

    • 45
    • 69

    Rain Showers Likely

    • 40
    • 55

    Mostly Sunny

    • 44
    • 57

    Mostly Sunny

Today 12 Oct Southwest Suffolk

Mostly sunny. Highs in the lower 60s.

Tonight 12 Oct Southwest Suffolk

Partly cloudy in the Evening, then becoming mostly clear. Patchy fog. Lows in the upper 50s. Northwest Winds 5 to 10 Mph.

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  • Temperature Real-Time

Islip Temperature Statistics

October Temperature

Islip, Long Island Mac Arthur Airport (6.8 miles)

  • Lowest 7 October, 2026

    39.7 °F

  • Average October

    61.6 °F

  • Highest 2 October, 2026

    79.6 °F

Climate (2021–2026)

Islip, Long Island Mac Arthur Airport (6.8 miles)

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  • Average Low 2021–2026

    47.2 °F

  • Average 2021–2026

    55.2 °F

  • Average High 2021–2026

    63.1 °F
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