Sly Creek Reservoir Weather Forecast

    • 45
    • 64

    Mostly Sunny

    • 47
    • 60

    Partly Sunny

    • 48
    • 57

    Rain Showers

    • 45
    • 49

    Rain Showers Likely

    • 45
    • 51

    Rain Showers

    • 44
    • 47

    Rain Showers

    • 43
    • 47

    Chance Rain Showers

Today 14 Dec Western Plumas County/Lassen Park

Sunny. Highs 52 to 67. Light Winds.

Tonight 14 Dec Western Plumas County/Lassen Park

Mostly clear. Lows 33 to 48. Light Winds.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sly Creek Reservoir Temperature Statistics

December Temperature

Nevada County Air Park (26.1 miles)

  • Lowest 4 December, 2025

    39.2 °F

  • Average December

    54.7 °F

  • Highest 11 December, 2025

    71.6 °F

Climate (2020–Present)

Nevada County Air Park (26.1 miles)

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  • Average Low 2020–2025

    51.9 °F

  • Average 2020–2025

    60.2 °F

  • Average High 2020–2025

    68.6 °F
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