Long Beach (Stony Brook) Weather Forecast

    • 65
    • 83

    Chance Thunderstorms

    • 66
    • 79

    Mostly Sunny

    • 66
    • 80

    Mostly Sunny

    • 66
    • 80

    Partly Sunny

    • 69
    • 81

    Slight Chance Rain Showers

    • 70
    • 84

    Chance Rain Showers

Today 22 Jul Northwest Suffolk

Partly sunny with a chance of Showers with a slight chance of Thunderstorms. Near steady temperature in the mid 80s. West Winds around 10 Mph with Gusts up to 20 Mph. Chance of rain 40 percent.

Tonight 22 Jul Northwest Suffolk

Partly cloudy. A slight chance of Showers and Thunderstorms in the evening. Less humid with Lows in the mid 60s. Northwest Winds 5 to 10 Mph, becoming north after midnight. Chance of rain 20 percent.

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Long Beach (Stony Brook) Temperature Statistics

July Temperature

Islip, Long Island Mac Arthur Airport (9.3 miles)

  • Lowest 20 July, 2026

    61 °F

  • Average July

    76.2 °F

  • Highest 3 July, 2026

    98.7 °F

Climate (2021–2026)

Islip, Long Island Mac Arthur Airport (9.3 miles)

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  • Average Low 2021–2026

    47.3 °F

  • Average 2021–2026

    55.2 °F

  • Average High 2021–2026

    63.1 °F
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