Folsom Lake Weather Forecast

    • 52
    • 81

    Mostly Sunny

    • 54
    • 86

    Becoming Sunny

    • 55
    • 86

    Mostly Sunny

    • 52
    • 82

    Partly Sunny

    • 50
    • 75

    Partly Sunny

    • 50
    • 74

    Mostly Cloudy

    • 47
    • 71

    Mostly Cloudy

Today 19 Sep Washington Palouse

Partly cloudy. Highs in the mid to upper 60s.

Tonight 19 Sep Washington Palouse

Mostly clear. Lows in the upper 40s to lower 50s. Light wind.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Folsom Lake Temperature Statistics

September Temperature

Fairchild Air Force Base (29.2 miles)

  • Lowest 5 September, 2026

    43.7 °F

  • Average September

    59 °F

  • Highest 1 September, 2026

    81 °F

Climate (2021–2026)

Fairchild Air Force Base (29.2 miles)

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  • Average Low 2021–2026

    39.6 °F

  • Average 2021–2026

    49.2 °F

  • Average High 2021–2026

    58.6 °F
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