Long Island Weather Forecast

    • 70
    • 95

    Slight Chance Thunderstorms

    • 69
    • 89

    Slight Chance Thunderstorms

    • 68
    • 90

    Mostly Sunny

    • 69
    • 91

    Mostly Sunny

    • 69
    • 92

    Chance Thunderstorms

    • 67
    • 90

    Chance Rain Showers

Today 6 Sep Jackson

Mostly Sunny, then becoming partly cloudy early this Afternoon, then becoming mostly sunny. Patchy fog early this morning. A slight chance of Showers. A slight chance of Thunderstorms this late morning and afternoon. Highs in the mid 90s. Light and variable Winds becoming north around 10 Mph this afternoon. Chance of rain 20 percent. Heat index Readings 105 to 109.

Tonight 6 Sep Jackson

Mostly clear. A slight chance of Showers in the evening. Lows around 70. Northeast Winds around 10 Mph. Chance of rain 20 percent.

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Long Island Temperature Statistics

September Temperature

Winchester Municipal Airport (26.1 miles)

  • Lowest 1 September, 2026

    68 °F
  • Average September

    82.5 °F
  • Highest 3 September, 2026

    98.6 °F

Climate (2021–2026)

Winchester Municipal Airport (26.1 miles)

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  • Average Low 2021–2026

    50.9 °F
  • Average 2021–2026

    61.4 °F
  • Average High 2021–2026

    71.7 °F
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