Pioneer Basin Lakes Weather Forecast

    • 34
    • 53

    Mostly Sunny

    • 40
    • 56

    Mostly Cloudy

    • 43
    • 59

    Partly Sunny

    • 41
    • 60

    Mostly Sunny

    • 37
    • 57

    Mostly Sunny

    • 34
    • 55

    Mostly Sunny

    • 34
    • 54

    Mostly Sunny

Today 7 Sep Upper San Joaquin River

Warmer, sunny. Highs 56 to 70. Southwest Winds up to 15 Mph. Gusts up to 30 Mph in the afternoon.

Tonight 7 Sep Upper San Joaquin River

Clear. Lows 37 to 49. South Winds up to 10 Mph. Gusts up to 25 Mph in the evening.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Pioneer Basin Lakes Temperature Statistics

September Temperature

Mammoth Yosemite Airport (10.6 miles)

  • Lowest 5 September, 2026

    33.8 °F

  • Average September

    56.2 °F

  • Highest 1 September, 2026

    71.6 °F

Climate (2021–2026)

Mammoth Yosemite Airport (10.6 miles)

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  • Average Low 2021–2026

    29.5 °F

  • Average 2021–2026

    45.7 °F

  • Average High 2021–2026

    60.5 °F
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