Slippery Rock Weather Forecast

    • 53
    • 79

    Patchy Fog

    • 52
    • 79

    Mostly Sunny

    • 63
    • 82

    Partly Sunny

    • 66
    • 85

    Rain Showers Likely

    • 54
    • 77

    Chance Rain Showers

    • 53
    • 75

    Partly Sunny

    • 59
    • 80

    Partly Sunny

Today 6 Sep Butler

Mostly sunny. Near steady temperature in the upper 70s. Northeast Winds 5 to 10 Mph.

Tonight 6 Sep Butler

Clear. Lows in the lower 50s. Northeast Winds around 5 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 4 September, 2026

    66 °F

  • Average September

    76.2 °F

  • Highest 2 September, 2026

    91.9 °F

Climate (2021–2026)

New Castle, New Castle Municipal Airport (18.6 miles)

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  • Average Low 2021–2026

    41.7 °F

  • Average 2021–2026

    51.4 °F

  • Average High 2021–2026

    61.1 °F
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