Merriam Lake Weather Forecast

    • 25
    • 33

    Mostly Sunny

    • 24
    • 34

    Mostly Sunny

    • 20
    • 33

    Sunny

    • 19
    • 32

    Sunny

    • 21
    • 33

    Mostly Sunny

    • 22
    • 34

    Mostly Sunny

Today 13 Jan Upper San Joaquin River

Not as cool. Sunny. Highs 39 to 53. Northeast Winds 5 to 15 Mph.

Tonight 13 Jan Upper San Joaquin River

Mostly clear. Near steady temperature in the mid 30s. Northeast Winds 5 to 15 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Merriam Lake Temperature Statistics

January Temperature

Mammoth Yosemite Airport (22.4 miles)

  • Lowest 10 January, 2026

    -2.2 °F

  • Average January

    21.4 °F

  • Highest 3 January, 2026

    39.2 °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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