West Mifflin Weather Forecast

    • 59
    • 84

    Increasing Clouds

    • 57
    • 82

    Partly Sunny

    • 56
    • 80

    Partly Sunny

    • 57
    • 85

    Mostly Sunny

    • 59
    • 86

    Mostly Sunny

    • 62
    • 84

    Partly Sunny

    • 61
    • 83

    Slight Chance Thunderstorms

Today 15 Sep Allegheny

Partly cloudy and warm. Near steady temperature in the lower 80s. East Winds 5 to 10 Mph.

Tonight 15 Sep Allegheny

Mostly cloudy. Lows in the upper 50s. East Winds 5 to 10 Mph.

Graph Plots Open in Graphs

  • Temperature Forecast NOAA

  • Temperature Real-Time

West Mifflin Temperature Statistics

September Temperature

Pittsburgh - Allegheny County Airport (2.5 miles)

  • Lowest 8 September, 2025

    45 °F

  • Average September

    64.4 °F

  • Highest 3 September, 2025

    82 °F

Climate (2020–Present)

Pittsburgh - Allegheny County Airport (2.5 miles)

Take a look at our website widgetsAvailable free! Find Out More

  • Average Low 2020–2025

    46.1 °F

  • Average 2020–2025

    54.6 °F

  • Average High 2020–2025

    63.3 °F
Get WillyWeather+ to remove ads