Twain Weather Forecast

    • 56
    • 93

    Chance Rain Showers

    • 55
    • 76

    Chance Rain Showers

    • 53
    • 82

    Slight Chance Rain Showers

    • 53
    • 85

    Sunny

    • 55
    • 92

    Mostly Sunny

    • 54
    • 88

    Chance Rain Showers

Today 18 Sep Western Plumas County/Lassen Park

Mostly cloudy. Highs 69 to 84 higher Elevations. 75 to 90 lower Elevations. Light Winds becoming southwest up to 10 Mph in the afternoon.

Tonight 18 Sep Western Plumas County/Lassen Park

Mostly cloudy. A slight chance of rain Showers after midnight. Cooler. Lows 48 to 63. Prevailing southwest Winds up to 10 Mph in the evening becoming light.

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Twain Temperature Statistics

September Temperature

Nevada County Air Park (54.7 miles)

  • Lowest 10 September, 2025

    55.4 °F

  • Average September

    71.6 °F

  • Highest 2 September, 2025

    95 °F

Climate (2020–Present)

Nevada County Air Park (54.7 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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