Blackrock Mountain Weather Forecast

    • 41
    • 70

    Sunny

    • 43
    • 71

    Sunny

    • 40
    • 73

    Mostly Sunny

    • 39
    • 69

    Mostly Cloudy

    • 38
    • 62

    Partly Sunny

    • 37
    • 60

    Partly Sunny

Today 18 Mar South End of the Upper Sierra

Sunny. Highs 67 to 81. Northwest Winds up to 10 Mph shifting to the southwest with Gusts to around 35 Mph in the afternoon.

Tonight 18 Mar South End of the Upper Sierra

Clear. Lows 44 to 58. Northwest Winds up to 10 Mph with Gusts to around 30 Mph.

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Blackrock Mountain Temperature Statistics

March Temperature

Porterville, Porterville Municipal Airport (44.7 miles)

  • Lowest 7 March, 2026

    39 °F

  • Average March

    59.5 °F

  • Highest 15 March, 2026

    81 °F

Climate (2021–Present)

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

    79.1 °F
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