Tarentum Weather Forecast

    • 21
    • 47

    Snow Showers

    • 20
    • 28

    Snow

    • 15
    • 32

    Snow

    • 14
    • 23

    Mostly Cloudy

    • 18
    • 32

    Mostly Cloudy

    • 16
    • 33

    Mostly Cloudy

    • 21
    • 34

    Mostly Cloudy

Today 29 Dec Allegheny

Snow. Patchy blowing snow. Little or no snow accumulation. Blustery. Near steady temperature in the upper 20s. Temperatures falling into the upper 20s late. West Winds 20 to 25 Mph with Gusts up to 45 Mph. Chance of snow 90 percent.

Tonight 29 Dec Allegheny

Considerable cloudiness. Snow Likely, mainly in the evening. Patchy blowing snow. Total snow accumulation around an inch. Blustery with Lows in the lower 20s. West Winds 20 to 25 Mph with Gusts up to 45 Mph. Chance of snow 70 percent.

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Tarentum Temperature Statistics

December Temperature

Butler, Butler County Airport/K W Scholter Field (15.5 miles)

  • Lowest 5 December, 2025

    7 °F

  • Average December

    28.9 °F

  • Highest 18 December, 2025

    55.9 °F

Climate (2020–Present)

Butler, Butler County Airport/K W Scholter Field (15.5 miles)

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  • Average Low 2020–2025

    42 °F

  • Average 2020–2025

    51.4 °F

  • Average High 2020–2025

    60.6 °F
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