Johnson Lake Weather Forecast

    • 58
    • 67

    Slight Chance Thunderstorms

    • 58
    • 71

    Mostly Sunny

    • 57
    • 71

    Mostly Sunny

    • 57
    • 69

    Partly Sunny

    • 59
    • 69

    Partly Sunny

    • 60
    • 71

    Partly Sunny

Today 14 Jul Yosemite NP outside of the valley

Sunny early in the Morning, then chance of Thunderstorms and slight chance of rain late in the morning. Partly sunny with chance of Thunderstorms in the afternoon. Highs 60 to 76. Southwest Winds up to 10 Mph. Chance of precipitation 50 percent.

Tonight 14 Jul Yosemite NP outside of the valley

Mostly clear. A 20 percent chance of Thunderstorms in the evening. Lows 44 to 58. Northwest Winds up to 10 Mph shifting to the east after midnight.

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Johnson Lake Temperature Statistics

July Temperature

Mammoth Yosemite Airport (36.7 miles)

  • Lowest 4 July, 2026

    39.2 °F

  • Average July

    66.5 °F

  • Highest 10 July, 2026

    87.8 °F

Climate (2021–2026)

Mammoth Yosemite Airport (36.7 miles)

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  • Average Low 2021–2026

    29.5 °F

  • Average 2021–2026

    45.7 °F

  • Average High 2021–2026

    60.6 °F
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