Deep Lake Weather Forecast

    • 53
    • 70

    Mostly Sunny

    • 56
    • 69

    Increasing Clouds

    • 54
    • 66

    Chance Rain Showers

    • 51
    • 65

    Mostly Sunny

    • 53
    • 66

    Sunny

    • 54
    • 70

    Mostly Sunny

    • 51
    • 62

    Chance Rain Showers

Today 17 Sep Western Siskiyou County

Sunny. Highs in the lower 80s to lower 90s. East Winds around 5 Mph shifting to the northwest this afternoon.

Tonight 17 Sep Western Siskiyou County

Clear. Lows in the lower 50s to lower 60s. Northwest Winds 5 to 10 Mph shifting to the northeast after midnight.

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Deep Lake Temperature Statistics

September Temperature

Montague Siskiyou County Airport (36 miles)

  • Lowest 15 September, 2025

    44.1 °F

  • Average September

    68.2 °F

  • Highest 1 September, 2025

    95 °F

Climate (2020–Present)

Montague Siskiyou County Airport (36 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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