Johnsville Weather Forecast

    • 49
    • 64

    Mostly Cloudy

    • 43
    • 60

    Mostly Cloudy

    • 43
    • 65

    Mostly Sunny

    • 46
    • 71

    Sunny

    • 48
    • 73

    Sunny

    • 45
    • 69

    Mostly Sunny

Today 26 Sep Lassen-Eastern Plumas-Eastern Sierra Counties

Mostly cloudy. Highs 67 to 77. Light Winds becoming southwest around 10 Mph in the afternoon.

Tonight 26 Sep Lassen-Eastern Plumas-Eastern Sierra Counties

Cloudy. Lows 39 to 49. Southwest Winds around 10 Mph in the evening becoming light.

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Johnsville Temperature Statistics

September Temperature

Emigrant Gap, Blue Canyon Nyack Airport (32.9 miles)

  • Lowest 1 September, 2026

    43.6 °F

  • Average September

    60.3 °F

  • Highest 9 September, 2026

    84.7 °F

Climate (2021–2026)

Emigrant Gap, Blue Canyon Nyack Airport (32.9 miles)

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  • Average Low 2021–2026

    46.7 °F

  • Average 2021–2026

    53.4 °F

  • Average High 2021–2026

    60.4 °F
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