Thompson Lake Weather Forecast

    • 69
    • 96

    Increasing Clouds

    • 68
    • 96

    Chance Rain Showers

    • 63
    • 91

    Mostly Sunny

    • 65
    • 91

    Sunny

    • 68
    • 94

    Mostly Sunny

    • 72
    • 96

    Partly Sunny

Today 15 Jul Upper Columbia Basin

Sunny. Highs in the mid to upper 90s. East wind 5 to 10 Mph.

Tonight 15 Jul Upper Columbia Basin

Haze in the evening. Mostly clear in the Evening, then mostly cloudy with a chance of Showers and Thunderstorms overnight. Lows in the lower 60s to lower 70s. Northeast wind 5 to 10 Mph. Gusts up to 20 Mph overnight. Chance of precipitation 20 percent.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Thompson Lake Temperature Statistics

July Temperature

Ephrata, Ephrata Municipal Airport (41 miles)

  • Lowest 1 July, 2026

    55.7 °F

  • Average July

    75.1 °F

  • Highest 7 July, 2026

    96.7 °F

Climate (2021–2026)

Ephrata, Ephrata Municipal Airport (41 miles)

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  • Average Low 2021–2026

    42.3 °F

  • Average 2021–2026

    53.4 °F

  • Average High 2021–2026

    63.8 °F
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