Grassy Lakes Weather Forecast

    • 32
    • 46

    Partly Sunny

    • 29
    • 43

    Sunny

    • 27
    • 37

    Mostly Sunny

    • 31
    • 41

    Partly Sunny

    • 31
    • 42

    Partly Sunny

    • 35
    • 44

    Mostly Cloudy

Today 22 Jan Western Plumas County/Lassen Park

Mostly cloudy in the morning then clearing. Highs 41 to 56 higher Elevations. 47 to 60 lower Elevations. Light Winds.

Tonight 22 Jan Western Plumas County/Lassen Park

Mostly clear. Colder. Lows 26 to 41. Light Winds.

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Grassy Lakes Temperature Statistics

January Temperature

Chico Municipal Airport (36 miles)

  • Lowest 10 January, 2026

    33.8 °F

  • Average January

    51.3 °F

  • Highest 16 January, 2026

    73.4 °F

Climate (2021–Present)

Chico Municipal Airport (36 miles)

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  • Average Low 2021–2026

    52.6 °F

  • Average 2021–2026

    61.2 °F

  • Average High 2021–2026

    75 °F
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