Deep Lake Weather Forecast

    • 55
    • 76

    Sunny

    • 50
    • 71

    Mostly Sunny

    • 50
    • 71

    Sunny

    • 58
    • 75

    Sunny

    • 61
    • 80

    Sunny

    • 59
    • 78

    Sunny

    • 58
    • 76

    Sunny

Today 31 Jul Western Siskiyou County

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

Tonight 31 Jul Western Siskiyou County

Mostly clear. Lows in the mid 50s to lower 60s. Northwest Winds 5 to 10 Mph shifting to the north after midnight.

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Deep Lake Temperature Statistics

July Temperature

Montague Siskiyou County Airport (36 miles)

  • Lowest 1 July, 2026

    40.6 °F

  • Average July

    74.2 °F

  • Highest 14 July, 2026

    97.6 °F

Climate (2021–2026)

Montague Siskiyou County Airport (36 miles)

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  • Average Low 2021–2026

    39.4 °F

  • Average 2021–2026

    54 °F

  • Average High 2021–2026

    69.1 °F
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