Alta Sierra Airport Weather Forecast

    • 64
    • 92

    Increasing Clouds

    • 60
    • 85

    Chance Rain Showers

    • 60
    • 76

    Chance Rain Showers

    • 60
    • 83

    Mostly Sunny

    • 61
    • 85

    Mostly Sunny

    • 62
    • 89

    Chance Rain Showers

    • 58
    • 81

    Chance Rain Showers

Today 17 Sep Motherlode

Sunny. Highs 87 to 97. Prevailing northeast Winds up to 10 Mph shifting to the west in the afternoon.

Tonight 17 Sep Motherlode

Mostly clear in the evening then becoming mostly cloudy. Lows 63 to 71. Light Winds. Gusts up to 20 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Alta Sierra Airport Temperature Statistics

September Temperature

Nevada County Air Park (8.1 miles)

  • Lowest 10 September, 2025

    55.4 °F

  • Average September

    71.4 °F

  • Highest 2 September, 2025

    95 °F

Climate (2020–Present)

Nevada County Air Park (8.1 miles)

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  • Average Low 2020–2025

    52 °F

  • Average 2020–2025

    60.4 °F

  • Average High 2020–2025

    68.8 °F
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