Alta Sierra Weather Forecast

    • 55
    • 82

    Sunny

    • 56
    • 82

    Sunny

    • 54
    • 76

    Sunny

    • 54
    • 79

    Sunny

    • 56
    • 83

    Mostly Sunny

    • 56
    • 84

    Mostly Sunny

Today 14 Sep Northern Motherlode Between 1000-3000 ft

Sunny, warmer. Highs 80 to 88. East Winds up to 10 Mph in the morning becoming light.

Tonight 14 Sep Northern Motherlode Between 1000-3000 ft

Clear. Lows 54 to 60. Light Winds.

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  • 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

    66.9 °F

  • Highest 9 September, 2026

    91.4 °F

Climate (2021–2026)

Nevada County Air Park (6.2 miles)

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  • Average Low 2021–2026

    52.1 °F

  • Average 2021–2026

    60.2 °F

  • Average High 2021–2026

    68.4 °F
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