Mount Sinai Harbor Weather Forecast

    • 40
    • 53

    Rain Showers Likely

    • 40
    • 52

    Mostly Sunny

    • 44
    • 55

    Partly Sunny

    • 48
    • 52

    Rain Showers Likely

    • 33
    • 53

    Chance Rain/Snow

    • 37
    • 41

    Chance Rain

Today 8 Mar Northwest Suffolk

Mostly cloudy. Patchy fog in the morning. A chance of Showers, mainly in the morning. Not as cool with Highs in the upper 50s. West Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 50 percent.

Tonight 8 Mar Northwest Suffolk

Partly cloudy in the Evening, then becoming mostly clear. Lows in the upper 30s. West Winds 5 to 10 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Mount Sinai Harbor Temperature Statistics

March Temperature

Islip, Long Island Mac Arthur Airport (11.8 miles)

  • Lowest 2 March, 2026

    19 °F

  • Average March

    33.3 °F

  • Highest 4 March, 2026

    45 °F

Climate (2021–Present)

Islip, Long Island Mac Arthur Airport (11.8 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    47.3 °F

  • Average 2021–2026

    55.1 °F

  • Average High 2021–2026

    63 °F
Get WillyWeather+ to remove ads