Carnegie Weather Forecast

    • 29
    • 39

    Snow

    • 18
    • 34

    Partly Sunny

    • 2
    • 25

    Mostly Cloudy

    • 10
    • 15

    Snow Likely

    • 10
    • 24

    Snow Likely

    • 3
    • 19

    Mostly Cloudy

Today 21 Jan Allegheny

Considerable cloudiness. A slight chance of snow Early, then snow. Highs in the upper 30s. South Winds 15 to 20 Mph with Gusts up to 30 Mph. Chance of snow 90 percent.

Tonight 21 Jan Allegheny

Considerable cloudiness. Rain likely with a slight chance of snow in the Evening, then a chance of snow and rain after midnight. Little or no snow accumulation. Lows in the upper 20s. Southwest Winds around 15 Mph with Gusts up to 30 Mph. Chance of precipitation 70 percent.

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Carnegie Temperature Statistics

January Temperature

Pittsburgh - Allegheny County Airport (9.3 miles)

  • Lowest 19 January, 2026

    6.1 °F

  • Average January

    31.3 °F

  • Highest 9 January, 2026

    64.9 °F

Climate (2021–Present)

Pittsburgh - Allegheny County Airport (9.3 miles)

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  • Average Low 2021–2026

    46 °F

  • Average 2021–2026

    54.6 °F

  • Average High 2021–2026

    63.3 °F
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