Delaware River - Fort Mifflin Weather Forecast

    • 64
    • 83

    Mostly Sunny

    • 67
    • 89

    Mostly Sunny

    • 69
    • 90

    Mostly Cloudy

    • 69
    • 85

    Mostly Cloudy

    • 66
    • 83

    Partly Sunny

    • 67
    • 83

    Partly Sunny

    • 70
    • 85

    Partly Sunny

Today 3 Aug Philadelphia

Sunny. Highs in the mid 80s. Northeast Winds 5 to 10 Mph.

Tonight 3 Aug Philadelphia

Mostly clear. Lows in the lower 60s. Southeast Winds around 5 Mph this Evening, becoming light and variable.

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Delaware River - Fort Mifflin Temperature Statistics

August Temperature

Philadelphia, Philadelphia International Airport (0.6 miles)

  • Lowest 1 August, 2025

    66 °F

  • Average August

    69.7 °F

  • Highest 1 August, 2025

    73 °F

Climate (2020–Present)

Philadelphia, Philadelphia International Airport (0.6 miles)

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  • Average Low 2020–2025

    50.3 °F

  • Average 2020–2025

    58.4 °F

  • Average High 2020–2025

    66.9 °F
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