Blackrock Mountain Weather Forecast

    • 44
    • 65

    Becoming Sunny

    • 46
    • 67

    Partly Sunny

    • 45
    • 70

    Partly Sunny

    • 45
    • 70

    Partly Sunny

    • 47
    • 71

    Mostly Sunny

    • 46
    • 71

    Mostly Sunny

Today 15 Aug South End of the Upper Sierra

Sunny. Highs 67 to 81. South Winds up to 10 Mph shifting to the southwest in the afternoon. Gusts up to 30 Mph.

Tonight 15 Aug South End of the Upper Sierra

Clear. Lows 48 to 62. West Winds up to 10 Mph with Gusts to around 30 Mph shifting to the north with Gusts to around 20 Mph after midnight.

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Blackrock Mountain Temperature Statistics

August Temperature

Porterville, Porterville Municipal Airport (44.7 miles)

  • Lowest 1 August, 2026

    68 °F

  • Average August

    88.8 °F

  • Highest 9 August, 2026

    108 °F

Climate (2021–2026)

Porterville, Porterville Municipal Airport (44.7 miles)

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  • Average Low 2021–2026

    51.8 °F

  • Average 2021–2026

    65 °F

  • Average High 2021–2026

    79 °F
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