Merriam Lake Weather Forecast

    • 15
    • 31

    Breezy

    • 18
    • 24

    Snow

    • 18
    • 25

    Snow Showers

    • 24
    • 33

    Partly Sunny

    • 27
    • 38

    Partly Sunny

    • 30
    • 42

    Mostly Sunny

Today 26 May Upper San Joaquin River

Breezy. Partly sunny. Chance of rain and snow in the Morning, then chance of rain in the afternoon. Highs 36 to 50. Southwest Winds 15 to 25 Mph with Gusts to around 60 Mph. Chance of precipitation 50 percent.

Tonight 26 May Upper San Joaquin River

Mostly cloudy with chance of snow and rain in the Evening, then partly cloudy after midnight. Lows 20 to 32. Southwest Winds 5 to 15 Mph with Gusts to around 45 Mph decreasing to up to 5 Mph with Gusts to around 25 Mph after midnight. Chance of precipitation 50 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Merriam Lake Temperature Statistics

May Temperature

Mammoth Yosemite Airport (22.4 miles)

  • Lowest 18 May, 2026

    19.4 °F

  • Average May

    53.3 °F

  • Highest 10 May, 2026

    78.8 °F

Climate (2021–Present)

Mammoth Yosemite Airport (22.4 miles)

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  • Average Low 2021–2026

    29.6 °F

  • Average 2021–2026

    45.9 °F

  • Average High 2021–2026

    60.7 °F
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