Dunsmuir Weather Forecast

    • 56
    • 91

    Mostly Sunny

    • 57
    • 90

    Increasing Clouds

    • 55
    • 82

    Slight Chance Thunderstorms

    • 54
    • 84

    Mostly Sunny

    • 55
    • 87

    Sunny

    • 57
    • 90

    Mostly Sunny

    • 52
    • 82

    Chance Rain Showers

Today 17 Sep South Central Siskiyou County

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

Tonight 17 Sep South Central Siskiyou County

Clear. Lows in the mid 40s to mid 50s. Southwest Winds around 5 Mph shifting to the north after midnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Dunsmuir Temperature Statistics

September Temperature

Mount Shasta (7.5 miles)

  • Lowest 15 September, 2025

    44.1 °F

  • Average September

    63.1 °F

  • Highest 1 September, 2025

    90 °F

Climate (2020–Present)

Mount Shasta (7.5 miles)

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  • Average Low 2020–2025

    39.5 °F

  • Average 2020–2025

    52.4 °F

  • Average High 2020–2025

    65.7 °F
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