Merrimac Weather Forecast

    • 53
    • 65

    Mostly Sunny

    • 54
    • 64

    Sunny

    • 52
    • 64

    Mostly Sunny

    • 50
    • 57

    Partly Sunny

    • 45
    • 52

    Rain Showers Likely

    • 46
    • 51

    Rain Showers

    • 46
    • 49

    Slight Chance Rain Showers

Today 31 Oct Western Plumas County/Lassen Park

Mostly sunny. Highs 59 to 74. Light Winds.

Tonight 31 Oct Western Plumas County/Lassen Park

Mostly clear. Lows 39 to 54. Light Winds.

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Merrimac Temperature Statistics

October Temperature

Oroville Municipal Airport (24.9 miles)

  • Lowest 16 October, 2025

    45 °F

  • Average October

    62.3 °F

  • Highest 7 October, 2025

    87.1 °F

Climate (2020–Present)

Oroville Municipal Airport (24.9 miles)

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  • Average Low 2020–2025

    53 °F

  • Average 2020–2025

    64.9 °F

  • Average High 2020–2025

    76.9 °F
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