Josephine Lake Weather Forecast

    • 51
    • 63

    Slight Chance Thunderstorms

    • 48
    • 57

    Chance Thunderstorms

    • 46
    • 57

    Chance Thunderstorms

    • 48
    • 58

    Sunny

    • 50
    • 63

    Mostly Sunny

    • 47
    • 58

    Chance Rain Showers

Today 18 Sep Western Siskiyou County

Sunny then becoming partly cloudy in the late morning and early afternoon then becoming mostly cloudy. Highs in the mid 70s to mid 80s. Northeast Winds around 5 Mph shifting to the north late this afternoon.

Tonight 18 Sep Western Siskiyou County

Mostly cloudy with a 20 percent chance of Thunderstorms. Lows in the mid 50s to lower 60s. Northwest Winds around 5 Mph shifting to the east late in the evening and overnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Josephine Lake Temperature Statistics

September Temperature

Trinity Center (13 miles)

  • Lowest 14 September, 2025

    50 °F

  • Average September

    69.2 °F

  • Highest 1 September, 2025

    95 °F

Climate (2020–Present)

Trinity Center (13 miles)

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  • Average Low 2020–2025

    42.2 °F

  • Average 2020–2025

    55.1 °F

  • Average High 2020–2025

    68.5 °F
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