Tarentum Weather Forecast

    • 61
    • 77

    Rain Showers Likely

    • 59
    • 80

    Chance Rain Showers

    • 63
    • 84

    Mostly Cloudy

    • 61
    • 83

    Chance Rain Showers

    • 53
    • 81

    Chance Rain Showers

    • 50
    • 75

    Partly Sunny

Today 24 May Allegheny

Mostly cloudy. Isolated Showers in the Morning, then numerous Showers and scattered Thunderstorms in the afternoon. Highs in the upper 70s. Southeast Winds around 5 Mph. Chance of rain 60 percent.

Tonight 24 May Allegheny

Cloudy. Showers and scattered Thunderstorms in the Evening, then scattered Showers with isolated Thunderstorms after midnight. Patchy fog after midnight. Warm with Lows in the lower 60s. Southeast Winds around 5 Mph, becoming southwest around 5 Mph after midnight. Chance of rain 80 percent.

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Tarentum Temperature Statistics

May Temperature

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

  • Lowest 1 May, 2026

    30.9 °F

  • Average May

    55.9 °F

  • Highest 18 May, 2026

    88 °F

Climate (2021–Present)

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

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  • Average Low 2021–2026

    42.3 °F

  • Average 2021–2026

    51.6 °F

  • Average High 2021–2026

    60.9 °F
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