Merriam Lake Weather Forecast

    • 19
    • 34

    Increasing Clouds

    • 22
    • 32

    Mostly Cloudy

    • 17
    • 24

    Slight Chance Snow

    • 13
    • 24

    Partly Sunny

    • 14
    • 23

    Mostly Sunny

    • 18
    • 27

    Partly Sunny

Today 20 Jan Upper San Joaquin River

Mostly sunny. Highs 40 to 54. West Winds up to 10 Mph.

Tonight 20 Jan Upper San Joaquin River

Partly cloudy in the evening then becoming mostly cloudy. Lows 22 to 38. Northwest Winds up to 10 Mph shifting to the west after midnight.

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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

    29.5 °F

  • Average 2021–2026

    45.8 °F

  • Average High 2021–2026

    60.7 °F
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