McArthur Weather Forecast

    • 47
    • 88

    Increasing Clouds

    • 46
    • 89

    Chance Rain Showers

    • 45
    • 89

    Partly Sunny

    • 45
    • 89

    Mostly Sunny

    • 44
    • 88

    Mostly Sunny

    • 44
    • 88

    Mostly Sunny

Today 23 Aug Modoc County

Sunny until early afternoon then becoming mostly cloudy. Highs in the lower to mid 80s. Northeast Winds around 5 Mph shifting to the southwest this afternoon.

Tonight 23 Aug Modoc County

Partly cloudy in the evening then clearing. Lows in the lower to mid 50s. Southwest Winds around 5 Mph shifting to the southeast after midnight.

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McArthur Temperature Statistics

August Temperature

Alturas (10.6 miles)

  • Lowest 16 August, 2026

    38.6 °F

  • Average August

    70.5 °F

  • Highest 7 August, 2026

    101.6 °F

Climate (2021–2026)

Alturas (10.6 miles)

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  • Average Low 2021–2026

    33.3 °F

  • Average 2021–2026

    49.3 °F

  • Average High 2021–2026

    64.8 °F
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