Copco Lake Weather Forecast

    • 44
    • 72

    Sunny

    • 48
    • 79

    Sunny

    • 44
    • 76

    Rain Likely

    • 38
    • 50

    Chance Rain

    • 37
    • 59

    Mostly Sunny

    • 45
    • 72

    Mostly Sunny

    • 48
    • 77

    Mostly Sunny

Today 30 Apr North Central and Southeast Siskiyou County

Sunny. Highs in the lower 60s to lower 70s. Northeast Winds 5 to 10 Mph.

Tonight 30 Apr North Central and Southeast Siskiyou County

Clear. Lows in the lower to mid 40s. North Winds 5 to 10 Mph shifting to the east well after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Copco Lake Temperature Statistics

April Temperature

Montague Siskiyou County Airport (16.2 miles)

  • Lowest 3 April, 2025

    23.8 °F

  • Average April

    50.7 °F

  • Highest 15 April, 2025

    80.7 °F

Climate (2020–Present)

Montague Siskiyou County Airport (16.2 miles)

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  • Average Low 2020–2025

    39.8 °F

  • Average 2020–2025

    54.2 °F

  • Average High 2020–2025

    69 °F
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