Nassau Weather Forecast

    • 58
    • 71

    Rain Showers

    • 58
    • 69

    Chance Rain Showers

    • 55
    • 68

    Chance Rain Showers

    • 54
    • 67

    Chance Rain Showers

    • 55
    • 68

    Slight Chance Rain Showers

    • 56
    • 70

    Mostly Cloudy

Today 22 Sep Inland Sussex

Mostly cloudy. A chance of Showers with a slight chance of Thunderstorms in the Morning, then Showers likely with a slight chance of Thunderstorms in the afternoon. Highs around 70. Northeast Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of rain 70 percent.

Tonight 22 Sep Inland Sussex

Showers likely. Breezy with Lows in the upper 50s. Northeast Winds 15 to 25 Mph with Gusts up to 35 Mph. Chance of rain 70 percent.

Graph Plots Open in Graphs

  • 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

    75.2 °F

  • Highest 1 September, 2026

    91.7 °F

Climate (2021–2026)

Georgetown - Delaware Coastal Airport (9.9 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2021–2026

    48.9 °F

  • Average 2021–2026

    58.7 °F

  • Average High 2021–2026

    68.3 °F
Get WillyWeather+ to remove ads