Nassau Weather Forecast

    • 57
    • 68

    Chance Rain Showers

    • 56
    • 68

    Chance Rain Showers

    • 57
    • 66

    Slight Chance Rain Showers

    • 57
    • 69

    Partly Sunny

    • 57
    • 71

    Mostly Sunny

    • 60
    • 74

    Partly Sunny

Today 25 Sep Inland Sussex

Partly sunny. A slight chance of Showers in the afternoon. Highs in the upper 60s. North Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of rain 20 percent.

Tonight 25 Sep Inland Sussex

Mostly cloudy with a 30 percent chance of Showers. Lows in the mid 50s. North Winds 15 to 20 Mph with Gusts up to 35 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Nassau Temperature Statistics

September Temperature

Georgetown - Delaware Coastal Airport (9.9 miles)

  • Lowest 16 September, 2026

    55.7 °F

  • Average September

    74.6 °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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