Slippery Rock Weather Forecast

    • 43
    • 65

    Decreasing Clouds

    • 41
    • 68

    Mostly Sunny

    • 45
    • 72

    Mostly Sunny

    • 48
    • 77

    Mostly Sunny

    • 50
    • 80

    Mostly Sunny

    • 48
    • 80

    Mostly Sunny

    • 46
    • 76

    Mostly Sunny

Today 6 Sep Butler

Mostly cloudy with a 20 percent chance of Showers. Near steady temperature in the upper 60s. Southwest Winds 5 to 10 Mph.

Tonight 6 Sep Butler

Mostly cloudy this Evening, then clearing. Lows in the mid 40s. West Winds 5 to 10 Mph with Gusts up to 20 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Slippery Rock Temperature Statistics

September Temperature

New Castle, New Castle Municipal Airport (18.6 miles)

  • Lowest 1 September, 2025

    46 °F

  • Average September

    63 °F

  • Highest 3 September, 2025

    82 °F

Climate (2020–Present)

New Castle, New Castle Municipal Airport (18.6 miles)

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  • Average Low 2020–2025

    42 °F

  • Average 2020–2025

    51.4 °F

  • Average High 2020–2025

    61.1 °F
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