Alta Sierra Weather Forecast

    • 41
    • 59

    Becoming Sunny

    • 43
    • 61

    Sunny

    • 44
    • 63

    Sunny

    • 43
    • 63

    Sunny

    • 43
    • 64

    Mostly Sunny

    • 43
    • 63

    Mostly Sunny

    • 43
    • 59

    Partly Sunny

Today 8 Dec Motherlode

Widespread fog. Locally dense in the morning. Patchy dense fog early in the afternoon. Mostly sunny. Highs 50 to 64. Light Winds.

Tonight 8 Dec Motherlode

Mostly clear. Haze through the night. Patchy fog late in the Evening, then Areas of fog. Locally dense after midnight. Lows 39 to 49. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Alta Sierra Temperature Statistics

December Temperature

Nevada County Air Park (6.2 miles)

  • Lowest 4 December, 2025

    39.2 °F

  • Average December

    50 °F

  • Highest 1 December, 2025

    59 °F

Climate (2020–Present)

Nevada County Air Park (6.2 miles)

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  • Average Low 2020–2025

    51.9 °F

  • Average 2020–2025

    60.2 °F

  • Average High 2020–2025

    68.6 °F
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