Alta Sierra Weather Forecast

    • 57
    • 80

    Sunny

    • 62
    • 86

    Partly Sunny

    • 66
    • 92

    Partly Sunny

    • 66
    • 94

    Mostly Sunny

    • 62
    • 87

    Mostly Sunny

    • 59
    • 79

    Mostly Sunny

Today 7 Sep Northern Motherlode Between 1000-3000 ft

Sunny. Highs 77 to 85. Light Winds.

Tonight 7 Sep Northern Motherlode Between 1000-3000 ft

Clear. Lows 55 to 61. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Alta Sierra Temperature Statistics

September Temperature

Nevada County Air Park (6.2 miles)

  • Lowest 1 September, 2026

    48.2 °F

  • Average September

    56.7 °F

  • Highest 1 September, 2026

    66.2 °F

Climate (2021–2026)

Nevada County Air Park (6.2 miles)

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  • Average Low 2021–2026

    52.2 °F

  • Average 2021–2026

    60.2 °F

  • Average High 2021–2026

    68.5 °F
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