Belle Terre Weather Forecast

    • 64
    • 71

    Mostly Cloudy

    • 65
    • 69

    Rain Showers Likely

    • 67
    • 74

    Chance Rain Showers

    • 61
    • 78

    Mostly Sunny

    • 59
    • 69

    Mostly Sunny

    • 61
    • 70

    Partly Sunny

Today 16 Sep Northwest Suffolk

Mostly cloudy this Morning, then becoming partly sunny. Highs in the lower 70s. Northeast Winds 10 to 15 Mph.

Tonight 16 Sep Northwest Suffolk

Mostly cloudy. A slight chance of Showers in the Evening, then a chance of Showers after midnight. Lows in the upper 50s. East Winds 10 to 15 Mph. Chance of rain 50 percent.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

Belle Terre Temperature Statistics

September Temperature

Islip, Long Island Mac Arthur Airport (11.2 miles)

  • Lowest 9 September, 2025

    54 °F

  • Average September

    69.1 °F

  • Highest 6 September, 2025

    81 °F

Climate (2020–Present)

Islip, Long Island Mac Arthur Airport (11.2 miles)

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

  • Average Low 2020–2025

    47.4 °F

  • Average 2020–2025

    55.2 °F

  • Average High 2020–2025

    63.1 °F
Get WillyWeather+ to remove ads