Delaware River - Fort Mifflin Weather Forecast

    • 72
    • 87

    Chance Thunderstorms

    • 72
    • 88

    Chance Rain Showers

    • 75
    • 91

    Chance Thunderstorms

    • 74
    • 92

    Chance Thunderstorms

    • 72
    • 90

    Chance Rain Showers

    • 68
    • 86

    Slight Chance Rain Showers

Today 30 Aug Philadelphia

Mostly sunny. A chance of Thunderstorms with a slight chance of Showers in the afternoon. Hot with Highs in the upper 80s. Southwest Winds around 5 Mph, increasing to around 10 Mph in the afternoon. Chance of rain 30 percent.

Tonight 30 Aug Philadelphia

Mostly cloudy with a chance of Showers and Thunderstorms. Humid with Lows in the lower 70s. Southwest Winds 5 to 10 Mph. Chance of rain 50 percent.

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Delaware River - Fort Mifflin Temperature Statistics

August Temperature

Philadelphia, Philadelphia International Airport (0.6 miles)

  • Lowest 25 August, 2026

    64.9 °F

  • Average August

    80.2 °F

  • Highest 7 August, 2026

    94.6 °F

Climate (2021–2026)

Philadelphia, Philadelphia International Airport (0.6 miles)

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  • Average Low 2021–2026

    50.2 °F

  • Average 2021–2026

    58.5 °F

  • Average High 2021–2026

    67.2 °F
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