Hempstead Harbor Weather Forecast

    • 67
    • 75

    Chance Thunderstorms

    • 68
    • 75

    Chance Rain Showers

    • 70
    • 78

    Partly Sunny

    • 70
    • 78

    Mostly Cloudy

    • 69
    • 82

    Chance Rain Showers

    • 69
    • 83

    Chance Thunderstorms

    • 69
    • 85

    Mostly Sunny

Today 29 Jul Northern Nassau

Showers likely with a chance of Thunderstorms. Some Thunderstorms may produce heavy rainfall. Highs around 80. West Winds 5 to 10 Mph, becoming north this afternoon. Chance of rain 60 percent.

Tonight 29 Jul Northern Nassau

Mostly cloudy. A chance of Showers and Thunderstorms this Evening, then a chance of Showers with a slight chance of Thunderstorms after midnight. Some Thunderstorms may produce heavy rainfall this evening. Some Thunderstorms may produce heavy rainfall after midnight. Lows in the mid 60s. Northwest Winds 5 to 10 Mph. Chance of rain 50 percent.

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Hempstead Harbor Temperature Statistics

July Temperature

New York, La Guardia Airport (11.8 miles)

  • Lowest 7 July, 2026

    63.6 °F

  • Average July

    79.7 °F

  • Highest 2 July, 2026

    104.6 °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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