Alta Sierra Weather Forecast

    • 56
    • 76

    Sunny

    • 59
    • 86

    Sunny

    • 59
    • 86

    Sunny

    • 61
    • 89

    Mostly Sunny

    • 59
    • 87

    Mostly Sunny

    • 60
    • 89

    Mostly Sunny

Today 28 Sep Northern Motherlode Between 1000-3000 ft

Sunny. Highs 74 to 82. Light Winds becoming west up to 10 Mph in the afternoon.

Tonight 28 Sep Northern Motherlode Between 1000-3000 ft

Clear. Lows 54 to 60. Northeast Winds up to 10 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Alta Sierra Temperature Statistics

September Temperature

Nevada County Air Park (6.2 miles)

  • Lowest 17 September, 2026

    46.4 °F

  • Average September

    67.4 °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

    60.1 °F

  • Average High 2021–2026

    68.3 °F
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