Sprague Lake Weather Forecast

    • 56
    • 87

    Mostly Sunny

    • 57
    • 89

    Mostly Sunny

    • 56
    • 87

    Mostly Sunny

    • 44
    • 73

    Chance Rain Showers

    • 49
    • 74

    Sunny

    • 54
    • 84

    Mostly Sunny

    • 51
    • 85

    Partly Sunny

Today 18 Sep Upper Columbia Basin

Sunny, haze. Highs in the lower to mid 80s. South wind 5 to 10 Mph.

Tonight 18 Sep Upper Columbia Basin

Mostly clear. Haze and Areas of smoke overnight. Lows in the 50s. Light Wind, becoming north 5 to 10 Mph overnight.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Sprague Lake Temperature Statistics

September Temperature

Fairchild Air Force Base (31.1 miles)

  • Lowest 16 September, 2025

    48 °F

  • Average September

    70.2 °F

  • Highest 3 September, 2025

    98.2 °F

Climate (2020–Present)

Fairchild Air Force Base (31.1 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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