Merriam Lake Weather Forecast

    • 23
    • 35

    Decreasing Clouds

    • 19
    • 33

    Mostly Sunny

    • 21
    • 32

    Partly Sunny

    • 22
    • 32

    Partly Sunny

    • 18
    • 28

    Partly Sunny

    • 16
    • 26

    Mostly Sunny

    • 16
    • 26

    Mostly Sunny

Today 18 Jan Upper San Joaquin River

Partly sunny. Highs 41 to 55. Northwest Winds up to 10 Mph.

Tonight 18 Jan Upper San Joaquin River

Partly cloudy. Lows 26 to 38. North Winds up to 10 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

    21.3 °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

    29.5 °F

  • Average 2021–2026

    45.8 °F

  • Average High 2021–2026

    60.7 °F
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