Sewickley Weather Forecast

    • 55
    • 75

    Slight Chance Thunderstorms

    • 56
    • 71

    Partly Sunny

    • 57
    • 77

    Partly Sunny

    • 62
    • 80

    Partly Sunny

    • 64
    • 82

    Chance Thunderstorms

    • 61
    • 80

    Partly Sunny

    • 62
    • 79

    Partly Sunny

Today 23 Aug Allegheny

Mostly sunny with a slight chance of Showers and Thunderstorms. Near steady temperature in the lower 70s. West Winds 10 to 15 Mph with Gusts up to 25 Mph. Chance of rain 20 percent.

Tonight 23 Aug Allegheny

Partly cloudy. A chance of Showers this Evening, then a slight chance of Showers and Thunderstorms. Lows in the mid 50s. Southwest Winds 5 to 10 Mph with Gusts up to 20 Mph. Chance of rain 40 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sewickley Temperature Statistics

August Temperature

Pittsburgh, Pittsburgh International Airport (4.3 miles)

  • Lowest 4 August, 2026

    58.6 °F

  • Average August

    74 °F

  • Highest 4 August, 2026

    86.6 °F

Climate (2021–2026)

Pittsburgh, Pittsburgh International Airport (4.3 miles)

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  • Average Low 2021–2026

    45 °F

  • Average 2021–2026

    54.1 °F

  • Average High 2021–2026

    63.4 °F
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