Locust Valley Weather Forecast

    • 59
    • 71

    Chance Rain Showers

    • 62
    • 79

    Partly Sunny

    • 65
    • 83

    Partly Sunny

    • 57
    • 77

    Partly Sunny

    • 57
    • 75

    Partly Sunny

    • 55
    • 75

    Partly Sunny

Today 25 May Northern Nassau

Cloudy with a 20 percent chance of Showers. Highs in the lower 70s. Southwest Winds 5 to 10 Mph.

Tonight 25 May Northern Nassau

Mostly cloudy. Lows in the upper 50s. Southwest Winds around 5 Mph, becoming north after midnight.

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Locust Valley Temperature Statistics

May Temperature

Farmingdale - Republic Airport (13 miles)

  • Lowest 1 May, 2026

    44.1 °F

  • Average May

    59.3 °F

  • Highest 20 May, 2026

    91 °F

Climate (2021–Present)

Farmingdale - Republic Airport (13 miles)

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  • Average Low 2021–2026

    48.2 °F

  • Average 2021–2026

    55.6 °F

  • Average High 2021–2026

    63 °F
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