Johnsville Weather Forecast

    • 52
    • 79

    Cloudy

    • 50
    • 63

    Chance Rain Showers

    • 49
    • 69

    Slight Chance Rain Showers

    • 51
    • 71

    Mostly Sunny

    • 53
    • 77

    Mostly Sunny

    • 51
    • 75

    Chance Rain Showers

    • 48
    • 68

    Chance Rain Showers

Today 18 Sep Lassen-Eastern Plumas-Eastern Sierra Counties

Mostly cloudy. Highs 79 to 89. Light Winds becoming southeast around 10 Mph in the afternoon.

Tonight 18 Sep Lassen-Eastern Plumas-Eastern Sierra Counties

Cloudy. Lows 48 to 58. Southwest Winds 10 to 15 Mph.

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Johnsville Temperature Statistics

September Temperature

Emigrant Gap, Blue Canyon Nyack Airport (32.9 miles)

  • Lowest 10 September, 2025

    46.9 °F

  • Average September

    63.6 °F

  • Highest 2 September, 2025

    84 °F

Climate (2020–Present)

Emigrant Gap, Blue Canyon Nyack Airport (32.9 miles)

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  • Average Low 2020–2025

    46.7 °F

  • Average 2020–2025

    53.4 °F

  • Average High 2020–2025

    60.5 °F
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