Merrimac Weather Forecast

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    Chance Rain Showers

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    Rain Showers

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    Rain Showers

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    Rain Showers Likely

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    Rain Showers

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    Rain Showers

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    Rain Showers

Today 15 Dec Western Plumas County/Lassen Park

Mostly cloudy. Highs 48 to 63. Light Winds.

Tonight 15 Dec Western Plumas County/Lassen Park

Partly cloudy. A slight chance of rain Showers early in the evening. A chance of rain Showers in the late evening and early Morning, then a slight chance of rain Showers late in the night. Lows 36 to 51. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Merrimac Temperature Statistics

December Temperature

Oroville Municipal Airport (24.9 miles)

  • Lowest 3 December, 2025

    37 °F

  • Average December

    42.7 °F

  • Highest 3 December, 2025

    60.1 °F

Climate (2020–Present)

Oroville Municipal Airport (24.9 miles)

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  • Average Low 2020–2025

    53.1 °F

  • Average 2020–2025

    64.8 °F

  • Average High 2020–2025

    76.8 °F
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