Banks Lake Weather Forecast

    • 47
    • 60

    Rain Showers

    • 54
    • 66

    Partly Sunny

    • 54
    • 66

    Partly Sunny

    • 55
    • 72

    Mostly Sunny

    • 56
    • 74

    Mostly Sunny

    • 58
    • 77

    Mostly Sunny

Today 13 Sep Upper Columbia Basin

Rain Showers. Highs in the upper 50s to lower 60s. South wind 5 to 15 Mph with Gusts up to 30 Mph. Chance of precipitation near 100 percent. Rainfall Amounts up to a half inch possible.

Tonight 13 Sep Upper Columbia Basin

Cloudy with rain Showers likely in the Evening, then partly cloudy overnight. Lows in the mid to upper 40s. Southwest wind 5 to 15 Mph. Gusts up to 25 Mph in the evening. Chance of precipitation 70 percent. Rainfall Amounts less than a tenth of an inch.

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Banks Lake Temperature Statistics

September Temperature

Ephrata, Ephrata Municipal Airport (36.7 miles)

  • Lowest 4 September, 2026

    45.6 °F

  • Average September

    64.8 °F

  • Highest 9 September, 2026

    83.6 °F

Climate (2021–2026)

Ephrata, Ephrata Municipal Airport (36.7 miles)

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  • Average Low 2021–2026

    42.2 °F

  • Average 2021–2026

    53.4 °F

  • Average High 2021–2026

    63.9 °F
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