Scott Valley Airport Weather Forecast

    • 53
    • 86

    Slight Chance Thunderstorms

    • 53
    • 82

    Chance Rain Showers

    • 48
    • 79

    Slight Chance Thunderstorms

    • 47
    • 81

    Mostly Sunny

    • 47
    • 87

    Sunny

    • 49
    • 88

    Slight Chance Rain Showers

    • 48
    • 81

    Partly Sunny

Today 18 Sep Western Siskiyou County

Sunny early this Morning, then partly cloudy with a 20 percent chance of Thunderstorms late this afternoon. Highs in the mid 70s to mid 80s. Northeast Winds 5 to 10 Mph shifting to the north late this afternoon.

Tonight 18 Sep Western Siskiyou County

Partly cloudy early this evening then becoming mostly cloudy. Slight chance of Thunderstorms early this Evening, then slight chance of Showers late this evening. Lows in the mid 50s to lower 60s. Northeast Winds around 5 Mph shifting to the east after midnight. Chance of precipitation 10 percent.

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Scott Valley Airport Temperature Statistics

September Temperature

Montague Siskiyou County Airport (24.9 miles)

  • Lowest 16 September, 2025

    42.1 °F

  • Average September

    68.1 °F

  • Highest 1 September, 2025

    95 °F

Climate (2020–Present)

Montague Siskiyou County Airport (24.9 miles)

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  • Average Low 2020–2025

    39.6 °F

  • Average 2020–2025

    54.2 °F

  • Average High 2020–2025

    69 °F
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