Sly Creek Reservoir Weather Forecast

    • 43
    • 58

    Increasing Clouds

    • 43
    • 60

    Mostly Cloudy

    • 44
    • 62

    Partly Sunny

    • 39
    • 57

    Mostly Cloudy

    • 42
    • 60

    Mostly Sunny

    • 42
    • 63

    Mostly Sunny

    • 43
    • 64

    Sunny

Today 29 Jan Western Plumas County/Lassen Park

Mostly cloudy in the morning then clearing. Not as cool. Highs 41 to 56 higher Elevations. 48 to 61 lower Elevations. Light Winds.

Tonight 29 Jan Western Plumas County/Lassen Park

Partly cloudy in the evening then becoming mostly cloudy. Lows 29 to 44. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sly Creek Reservoir Temperature Statistics

January Temperature

Nevada County Air Park (26.1 miles)

  • Lowest 8 January, 2026

    32 °F

  • Average January

    51.2 °F

  • Highest 15 January, 2026

    73.4 °F

Climate (2021–Present)

Nevada County Air Park (26.1 miles)

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  • Average Low 2021–2026

    52.1 °F

  • Average 2021–2026

    60.4 °F

  • Average High 2021–2026

    68.8 °F
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