Folsom Lake Weather Forecast

    • 50
    • 73

    Mostly Sunny

    • 56
    • 86

    Sunny

    • 56
    • 89

    Sunny

    • 58
    • 90

    Partly Sunny

    • 60
    • 90

    Partly Sunny

    • 58
    • 89

    Partly Sunny

Today 15 Sep Washington Palouse

Mostly cloudy with a chance of rain Showers in the Morning, then partly cloudy in the afternoon. Highs in the mid 60s to lower 70s. Southwest wind 5 to 15 Mph. Chance of precipitation 20 percent. Rainfall Amounts less than a tenth of an inch.

Tonight 15 Sep Washington Palouse

Mostly clear. Patchy fog overnight. Lows in the lower 40s to lower 50s. Light Wind, becoming east 5 to 10 Mph overnight.

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  • Temperature Real-Time

Folsom Lake Temperature Statistics

September Temperature

Fairchild Air Force Base (29.2 miles)

  • Lowest 10 September, 2025

    56.3 °F

  • Average September

    72.9 °F

  • Highest 3 September, 2025

    98.2 °F

Climate (2020–Present)

Fairchild Air Force Base (29.2 miles)

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  • Average Low 2020–2025

    39.2 °F

  • Average 2020–2025

    49 °F

  • Average High 2020–2025

    58.7 °F
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