McArthur Weather Forecast

    • 37
    • 71

    Mostly Sunny

    • 41
    • 76

    Mostly Sunny

    • 43
    • 79

    Mostly Sunny

    • 45
    • 81

    Mostly Sunny

    • 43
    • 82

    Mostly Sunny

    • 43
    • 83

    Mostly Sunny

    • 38
    • 80

    Mostly Sunny

Today 19 May Modoc County

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

Tonight 19 May Modoc County

Mostly clear this evening then becoming partly cloudy. Lows in the lower to mid 40s. Northwest Winds 5 to 10 Mph.

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McArthur Temperature Statistics

May Temperature

Alturas (10.6 miles)

  • Lowest 14 May, 2026

    28.7 °F

  • Average May

    56.4 °F

  • Highest 12 May, 2026

    88.6 °F

Climate (2021–Present)

Alturas (10.6 miles)

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  • Average Low 2021–2026

    33.5 °F

  • Average 2021–2026

    49.6 °F

  • Average High 2021–2026

    64.9 °F
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