Nassau Weather Forecast

    • 59
    • 74

    Mostly Sunny

    • 63
    • 79

    Mostly Sunny

    • 66
    • 84

    Mostly Sunny

    • 66
    • 84

    Partly Sunny

    • 67
    • 77

    Partly Sunny

    • 67
    • 85

    Chance Rain Showers

Today 15 Sep Inland Sussex

Sunny. Highs in the mid 70s. Northeast Winds 5 to 10 Mph, becoming east this afternoon.

Tonight 15 Sep Inland Sussex

Mostly clear. Lows in the mid 50s. Southeast Winds around 5 Mph.

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  • Temperature Real-Time

Nassau Temperature Statistics

September Temperature

Georgetown - Delaware Coastal Airport (9.9 miles)

  • Lowest 8 September, 2026

    60.7 °F

  • Average September

    76.5 °F

  • Highest 1 September, 2026

    91.7 °F

Climate (2021–2026)

Georgetown - Delaware Coastal Airport (9.9 miles)

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  • Average Low 2021–2026

    48.9 °F

  • Average 2021–2026

    58.7 °F

  • Average High 2021–2026

    68.3 °F
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