Johnsville Weather Forecast

    • 57
    • 78

    Decreasing Clouds

    • 56
    • 77

    Mostly Sunny

    • 58
    • 78

    Partly Sunny

    • 57
    • 77

    Partly Sunny

    • 55
    • 76

    Partly Sunny

    • 54
    • 77

    Mostly Sunny

    • 54
    • 77

    Mostly Sunny

Today 21 Aug Lassen-Eastern Plumas-Eastern Sierra Counties

Cloudy. Highs 84 to 94. Light Winds becoming southwest 10 to 15 Mph in the afternoon.

Tonight 21 Aug Lassen-Eastern Plumas-Eastern Sierra Counties

Mostly cloudy in the evening then becoming partly cloudy. Lows 48 to 58. Southwest Winds around 10 Mph with Gusts up to 30 Mph in the evening becoming light.

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  • Temperature Forecast NOAA

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Johnsville Temperature Statistics

August Temperature

Emigrant Gap, Blue Canyon Nyack Airport (32.9 miles)

  • Lowest 13 August, 2026

    55.7 °F

  • Average August

    74 °F

  • Highest 7 August, 2026

    90.6 °F

Climate (2021–2026)

Emigrant Gap, Blue Canyon Nyack Airport (32.9 miles)

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  • Average Low 2021–2026

    46.8 °F

  • Average 2021–2026

    53.5 °F

  • Average High 2021–2026

    60.5 °F
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