Delaware River - Deemers Beach Weather Forecast

    • 73
    • 85

    Slight Chance Thunderstorms

    • 73
    • 91

    Chance Thunderstorms

    • 74
    • 86

    Chance Thunderstorms

    • 74
    • 91

    Chance Thunderstorms

    • 68
    • 87

    Slight Chance Thunderstorms

    • 64
    • 82

    Mostly Sunny

    • 61
    • 79

    Mostly Sunny

Today 31 Aug New Castle

Mostly cloudy with isolated Showers. Hot. Near steady temperature in the lower 80s. East Winds around 5 Mph. Chance of rain 20 percent.

Tonight 31 Aug New Castle

Mostly cloudy with a slight chance of Showers and Thunderstorms. Lows in the lower 70s. South Winds around 5 Mph. Chance of rain 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Delaware River - Deemers Beach Temperature Statistics

August Temperature

Wilmington, New Castle County Airport (1.9 miles)

  • Lowest 25 August, 2026

    58.6 °F

  • Average August

    78 °F

  • Highest 7 August, 2026

    93.7 °F

Climate (2021–2026)

Wilmington, New Castle County Airport (1.9 miles)

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  • Average Low 2021–2026

    47.9 °F

  • Average 2021–2026

    57.3 °F

  • Average High 2021–2026

    66.7 °F
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