Nassau Weather Forecast

    • 72
    • 86

    Mostly Sunny

    • 70
    • 88

    Rain Showers Likely

    • 66
    • 80

    Partly Sunny

    • 69
    • 80

    Chance Rain Showers

    • 69
    • 84

    Chance Rain Showers

    • 69
    • 83

    Partly Sunny

Today 9 Sep Inland Sussex

Sunny, hot. Near steady temperature in the mid 80s. Southwest Winds 10 to 15 Mph.

Tonight 9 Sep Inland Sussex

Mostly clear. Humid with Lows in the lower 70s. South Winds 10 to 15 Mph with Gusts up to 25 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Nassau Temperature Statistics

September Temperature

Georgetown - Delaware Coastal Airport (9.9 miles)

  • Lowest 7 September, 2026

    62.1 °F

  • Average September

    77 °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

    58.6 °F

  • Average High 2021–2026

    68.3 °F
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