Big Sage Reservoir Weather Forecast

    • 38
    • 54

    Increasing Clouds

    • 37
    • 60

    Becoming Sunny

    • 41
    • 65

    Sunny

    • 45
    • 72

    Mostly Sunny

    • 48
    • 75

    Partly Sunny

    • 45
    • 73

    Mostly Sunny

    • 45
    • 74

    Mostly Sunny

Today 29 May Modoc County

Mostly cloudy. Rain early this Morning, then chance of rain in the late morning and afternoon. Highs in the lower to mid 50s. West Winds 5 to 10 Mph. Chance of rain 80 percent.

Tonight 29 May Modoc County

Mostly cloudy with a slight chance of rain early this Evening, then partly cloudy late this evening. Mostly cloudy with a slight chance of rain after midnight. Lows around 40. Northwest Winds 5 to 10 Mph until well after midnight becoming light.

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Big Sage Reservoir Temperature Statistics

May Temperature

Alturas (9.3 miles)

  • Lowest 19 May, 2026

    27.6 °F

  • Average May

    56 °F

  • Highest 12 May, 2026

    88.6 °F

Climate (2021–Present)

Alturas (9.3 miles)

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  • Average Low 2021–2026

    33.5 °F

  • Average 2021–2026

    49.6 °F

  • Average High 2021–2026

    65 °F
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