Whitney Portal Weather Forecast

    • 51
    • 69

    Mostly Sunny

    • 51
    • 70

    Increasing Clouds

    • 51
    • 70

    Mostly Sunny

    • 48
    • 70

    Partly Sunny

    • 45
    • 67

    Mostly Sunny

    • 46
    • 65

    Mostly Sunny

    • 48
    • 67

    Mostly Sunny

Today 23 Sep Eastern Sierra Slopes of Inyo County

Sunny. Highs 62 to 72. East Winds 5 to 15 Mph.

Tonight 23 Sep Eastern Sierra Slopes of Inyo County

Mostly clear. Lows 45 to 55. Southwest Winds up to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Whitney Portal Temperature Statistics

September Temperature

Bishop, Bishop Airport (54.1 miles)

  • Lowest 2 September, 2026

    39.7 °F

  • Average September

    68.5 °F

  • Highest 11 September, 2026

    98.7 °F

Climate (2021–2026)

Bishop, Bishop Airport (54.1 miles)

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  • Average Low 2021–2026

    40.8 °F

  • Average 2021–2026

    59.7 °F

  • Average High 2021–2026

    76.6 °F
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