Hempstead Harbor Weather Forecast

    • 71
    • 79

    Mostly Cloudy

    • 62
    • 77

    Partly Sunny

    • 60
    • 68

    Mostly Cloudy

    • 59
    • 73

    Rain Showers Likely

    • 59
    • 71

    Chance Rain Showers

    • 58
    • 69

    Chance Rain Showers

Today 17 Sep Northern Nassau

Partly sunny this Morning, then becoming mostly cloudy. Highs around 80. South Winds 5 to 10 Mph.

Tonight 17 Sep Northern Nassau

Mostly cloudy. A slight chance of Showers in the Evening, then a chance of Showers after midnight. Humid with Lows in the upper 60s. South Winds around 10 Mph, becoming southwest after midnight. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Hempstead Harbor Temperature Statistics

September Temperature

New York, La Guardia Airport (11.8 miles)

  • Lowest 14 September, 2026

    64.9 °F

  • Average September

    75.5 °F

  • Highest 3 September, 2026

    88.6 °F

Climate (2021–2026)

New York, La Guardia Airport (11.8 miles)

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  • Average Low 2021–2026

    51.3 °F

  • Average 2021–2026

    57.6 °F

  • Average High 2021–2026

    64.6 °F
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