Smithtown Bay Weather Forecast

    • 68
    • 77

    Rain Showers

    • 67
    • 77

    Rain Showers Likely

    • 70
    • 79

    Partly Sunny

    • 72
    • 79

    Mostly Cloudy

    • 72
    • 79

    Chance Rain Showers

    • 72
    • 79

    Slight Chance Thunderstorms

Today 29 Jul Northwest Suffolk

Showers with a slight chance of Thunderstorms in the Morning, then Showers likely with a chance of Thunderstorms in the afternoon. Some Thunderstorms may produce heavy rainfall in the morning. Humid with Highs in the upper 70s. Southeast Winds around 10 Mph with Gusts up to 20 Mph. Chance of rain near 100 percent.

Tonight 29 Jul Northwest Suffolk

Mostly cloudy. A chance of Showers and Thunderstorms in the Evening, then a chance of Showers after midnight. Lows in the upper 60s. Northeast Winds 5 to 10 Mph, becoming north after midnight. Gusts up to 20 Mph. Chance of rain 50 percent.

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  • Temperature Real-Time

Smithtown Bay Temperature Statistics

July Temperature

Islip, Long Island Mac Arthur Airport (11.2 miles)

  • Lowest 26 July, 2026

    57.9 °F

  • Average July

    75.2 °F

  • Highest 3 July, 2026

    98.7 °F

Climate (2021–2026)

Islip, Long Island Mac Arthur Airport (11.2 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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