Grant Lake Weather Forecast

    • 51
    • 67

    Chance Rain Showers

    • 50
    • 64

    Rain Showers Likely

    • 55
    • 72

    Slight Chance Rain Showers

    • 54
    • 70

    Chance Rain Showers

    • 52
    • 68

    Chance Rain Showers

    • 51
    • 68

    Partly Sunny

    • 53
    • 69

    Mostly Cloudy

Today 26 Jun Okanogan Valley

Mostly cloudy with a chance of Showers and Thunderstorms. Highs in the upper 60s to upper 70s. South wind 5 to 15 Mph with Gusts up to 20 Mph. Chance of precipitation 50 percent. Rainfall Amounts less than a tenth of an Inch, except higher Amounts possible in Thunderstorms.

Tonight 26 Jun Okanogan Valley

A chance of Thunderstorms in the evening. Mostly cloudy with a chance of rain Showers. Lows in the lower 50s. Southwest wind 5 to 15 Mph in the Evening, becoming light and variable. Gusts up to 25 Mph. Chance of precipitation 50 percent. Rainfall Amounts less than a tenth of an Inch, except higher Amounts possible in Thunderstorms.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Grant Lake Temperature Statistics

June Temperature

Omak Airport (25.5 miles)

  • Lowest 7 June, 2026

    35.7 °F

  • Average June

    67.4 °F

  • Highest 15 June, 2026

    96.7 °F

Climate (2021–2026)

Omak Airport (25.5 miles)

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  • Average Low 2021–2026

    40.9 °F

  • Average 2021–2026

    52 °F

  • Average High 2021–2026

    63 °F
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