Merrimac Weather Forecast

    • 43
    • 57

    Increasing Clouds

    • 43
    • 54

    Mostly Cloudy

    • 43
    • 51

    Mostly Cloudy

    • 39
    • 46

    Chance Rain

    • 40
    • 52

    Mostly Sunny

    • 45
    • 56

    Mostly Cloudy

    • 45
    • 56

    Partly Sunny

Today 28 Oct Sierra Nevada of Tehama-Butte-Plumas Counties Above 3000 ft

Mostly clear. Lows 32 to 42. Highs 53 to 63.

Tonight 28 Oct Sierra Nevada of Tehama-Butte-Plumas Counties Above 3000 ft

Partly cloudy. Haze late in the night. Lows 32 to 42. Light Winds.

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Merrimac Temperature Statistics

October Temperature

Oroville Municipal Airport (24.9 miles)

  • Lowest 13 October, 2026

    44.7 °F

  • Average October

    69.6 °F

  • Highest 5 October, 2026

    98.7 °F

Climate (2021–2026)

Oroville Municipal Airport (24.9 miles)

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  • Average Low 2021–2026

    53.3 °F

  • Average 2021–2026

    65 °F

  • Average High 2021–2026

    77 °F
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