Blackrock Mountain Weather Forecast

    • 43
    • 68

    Sunny

    • 45
    • 68

    Increasing Clouds

    • 40
    • 57

    Rain Showers Likely

    • 37
    • 53

    Rain Showers Likely

    • 39
    • 58

    Chance Rain

    • 42
    • 61

    Slight Chance Thunderstorms

    • 43
    • 63

    Slight Chance Thunderstorms

Today 16 Sep South End of the Upper Sierra

Sunny. Highs 68 to 82. Southeast Winds up to 10 Mph shifting to the southwest in the afternoon.

Tonight 16 Sep South End of the Upper Sierra

Clear. Lows 46 to 62. Northwest Winds up to 10 Mph with Gusts to around 25 Mph.

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  • Temperature Real-Time

Blackrock Mountain Temperature Statistics

September Temperature

Porterville, Porterville Municipal Airport (44.7 miles)

  • Lowest 9 September, 2025

    57.9 °F

  • Average September

    77.5 °F

  • Highest 1 September, 2025

    102.9 °F

Climate (2020–Present)

Porterville, Porterville Municipal Airport (44.7 miles)

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  • Average Low 2020–2025

    51.4 °F

  • Average 2020–2025

    64.9 °F

  • Average High 2020–2025

    79.3 °F
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