Johnsville Weather Forecast

    • 48
    • 73

    Increasing Clouds

    • 52
    • 74

    Patchy Smoke

    • 49
    • 75

    Partly Sunny

    • 51
    • 76

    Mostly Sunny

    • 54
    • 77

    Mostly Sunny

    • 54
    • 76

    Partly Sunny

Today 19 Sep Lassen-Eastern Plumas-Eastern Sierra Counties

Sunny. Highs 72 to 82. Light Winds becoming east around 10 Mph in the afternoon.

Tonight 19 Sep Lassen-Eastern Plumas-Eastern Sierra Counties

Clear. Lows 40 to 50. Light Winds.

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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

    59.7 °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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