McArthur Weather Forecast

    • 40
    • 80

    Sunny

    • 44
    • 85

    Sunny

    • 47
    • 88

    Mostly Sunny

    • 49
    • 87

    Mostly Cloudy

    • 47
    • 81

    Partly Sunny

    • 46
    • 80

    Chance Rain Showers

    • 44
    • 79

    Mostly Sunny

Today 15 Sep Modoc County

Sunny. Highs in the lower 70s to lower 80s. Northeast Winds 5 to 10 Mph.

Tonight 15 Sep Modoc County

Clear. Lows in the lower 40s to lower 50s. Northeast Winds 10 to 15 Mph.

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  • Temperature Real-Time

McArthur Temperature Statistics

September Temperature

Alturas (10.6 miles)

  • Lowest 13 September, 2025

    41 °F

  • Average September

    66.5 °F

  • Highest 1 September, 2025

    91 °F

Climate (2020–Present)

Alturas (10.6 miles)

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  • Average Low 2020–2025

    32.9 °F

  • Average 2020–2025

    49.2 °F

  • Average High 2020–2025

    64.4 °F
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