Downtown Pittsburgh Weather Forecast

    • 27
    • 35

    Increasing Clouds

    • 28
    • 42

    Mostly Cloudy

    • 27
    • 51

    Rain

    • 22
    • 33

    Mostly Cloudy

    • 31
    • 45

    Chance Rain

    • 27
    • 41

    Chance Rain/Snow

Today 16 Dec Allegheny

Mostly sunny. Highs in the mid 30s. South Winds 5 to 10 Mph.

Tonight 16 Dec Allegheny

Mainly clear in the Evening, then becoming mostly cloudy. Lows in the mid 20s. Temperatures rising into the lower 30s after midnight. Southwest Winds 10 to 15 Mph with Gusts up to 25 Mph.

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Downtown Pittsburgh Temperature Statistics

December Temperature

Pittsburgh - Allegheny County Airport (6.8 miles)

  • Lowest 9 December, 2025

    12.9 °F

  • Average December

    27.6 °F

  • Highest 10 December, 2025

    43 °F

Climate (2020–Present)

Pittsburgh - Allegheny County Airport (6.8 miles)

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  • Average Low 2020–2025

    46.1 °F

  • Average 2020–2025

    54.6 °F

  • Average High 2020–2025

    63.2 °F
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