Sierraville Weather Forecast

    • 47
    • 83

    Sunny

    • 48
    • 85

    Mostly Sunny

    • 49
    • 82

    Mostly Cloudy

    • 45
    • 69

    Chance Rain Showers

    • 44
    • 75

    Chance Rain Showers

    • 45
    • 79

    Mostly Sunny

    • 47
    • 82

    Mostly Sunny

Today 16 Sep Lassen-Eastern Plumas-Eastern Sierra Counties

Sunny. Highs 77 to 87. Southeast Winds 10 to 15 Mph.

Tonight 16 Sep Lassen-Eastern Plumas-Eastern Sierra Counties

Clear. Lows 42 to 52. Southeast Winds around 10 Mph in the evening becoming light.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sierraville Temperature Statistics

September Temperature

Truckee-Tahoe (22.4 miles)

  • Lowest 11 September, 2025

    32 °F

  • Average September

    51.4 °F

  • Highest 1 September, 2025

    84.2 °F

Climate (2020–Present)

Truckee-Tahoe (22.4 miles)

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  • Average Low 2020–2025

    28 °F

  • Average 2020–2025

    40.7 °F

  • Average High 2020–2025

    59.8 °F
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