Sly Creek Reservoir Weather Forecast

    • 55
    • 72

    Partly Sunny

    • 55
    • 71

    Partly Sunny

    • 55
    • 73

    Mostly Sunny

    • 55
    • 74

    Mostly Sunny

    • 53
    • 73

    Mostly Sunny

    • 53
    • 71

    Sunny

    • 56
    • 75

    Sunny

Today 21 Jul Western Plumas County/Lassen Park

Mostly sunny early in the Morning, then a slight chance of rain Showers late in the morning. Mostly cloudy in the afternoon. Highs 60 to 75 higher Elevations. 65 to 80 lower Elevations. Prevailing southwest Winds up to 15 Mph.

Tonight 21 Jul Western Plumas County/Lassen Park

Partly cloudy. Colder. Lows 43 to 58. Prevailing southwest Winds up to 10 Mph with Gusts to around 25 Mph in the evening becoming light.

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Sly Creek Reservoir Temperature Statistics

July Temperature

Nevada County Air Park (26.1 miles)

  • Lowest 4 July, 2025

    60.8 °F

  • Average July

    77.2 °F

  • Highest 11 July, 2025

    91.4 °F

Climate (2020–Present)

Nevada County Air Park (26.1 miles)

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  • Average Low 2020–2025

    52.1 °F

  • Average 2020–2025

    60.6 °F

  • Average High 2020–2025

    68.9 °F
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