Tarentum Weather Forecast

    • 25
    • 33

    Partly Sunny

    • 25
    • 41

    Mostly Cloudy

    • 26
    • 51

    Rain Showers

    • 20
    • 33

    Mostly Cloudy

    • 30
    • 44

    Chance Rain Showers

    • 25
    • 40

    Chance Rain Showers

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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Tarentum Temperature Statistics

December Temperature

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

  • Lowest 5 December, 2025

    7 °F

  • Average December

    26.1 °F

  • Highest 10 December, 2025

    39.9 °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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