Nassau Weather Forecast

    • 25
    • 34

    Decreasing Clouds

    • 22
    • 39

    Partly Sunny

    • 31
    • 43

    Mostly Cloudy

    • 37
    • 48

    Mostly Cloudy

    • 35
    • 55

    Partly Sunny

    • 39
    • 51

    Mostly Cloudy

    • 45
    • 56

    Chance Rain

Today 3 Jan Inland Sussex

Cloudy. Highs in the mid 30s. Northwest Winds 5 to 10 Mph.

Tonight 3 Jan Inland Sussex

Mostly cloudy. Cold with Lows in the mid 20s. North Winds around 5 Mph.

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Nassau Temperature Statistics

January Temperature

Georgetown - Delaware Coastal Airport (9.9 miles)

  • Lowest 1 January, 2026

    21 °F

  • Average January

    30.5 °F

  • Highest 1 January, 2026

    37.9 °F

Climate (2021–Present)

Georgetown - Delaware Coastal Airport (9.9 miles)

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  • Average Low 2021–2026

    49.2 °F

  • Average 2021–2026

    58.7 °F

  • Average High 2021–2026

    68.3 °F
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