Smithtown Bay Weather Forecast

    • 70
    • 85

    Chance Rain Showers

    • 69
    • 85

    Slight Chance Rain Showers

    • 68
    • 84

    Partly Sunny

Today 11 Jun Northwest Suffolk

Partly sunny. Patchy fog in the morning. A slight chance of Showers and Thunderstorms in the afternoon. Warmer with Highs in the lower 90s. West Winds 5 to 10 Mph. Chance of rain 20 percent. Heat index Values up to 100.

Tonight 11 Jun Northwest Suffolk

Mostly cloudy. A chance of Showers and Thunderstorms in the Evening, then a chance of Showers after midnight. Humid with Lows in the lower 70s. West Winds 5 to 10 Mph. Chance of rain 50 percent.

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Smithtown Bay Temperature Statistics

June Temperature

Islip, Long Island Mac Arthur Airport (11.2 miles)

  • Lowest 2 June, 2026

    46.7 °F

  • Average June

    67.9 °F

  • Highest 5 June, 2026

    88.6 °F

Climate (2021–Present)

Islip, Long Island Mac Arthur Airport (11.2 miles)

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  • Average Low 2021–2026

    47.2 °F

  • Average 2021–2026

    55.1 °F

  • Average High 2021–2026

    63 °F
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