Riley Lake Weather Forecast

    • 43
    • 62

    Rain

    • 42
    • 59

    Rain Showers

    • 45
    • 67

    Chance Rain

    • 45
    • 68

    Rain Likely

    • 44
    • 67

    Rain Likely

    • 45
    • 66

    Chance Rain

Today 5 Jun Foothills and Valleys of the North Cascades

A chance of Showers until late afternoon. A slight chance of Thunderstorms in the afternoon. Showers late in the afternoon. Rainfall Amounts a tenth to a quarter of an inch Possible, except higher Amounts possible in Thunderstorms. Highs near 60. South wind to 10 Mph.

Tonight 5 Jun Foothills and Valleys of the North Cascades

A slight chance of Thunderstorms in the evening. Showers in the Evening, then Showers likely after midnight. Rainfall Amounts a quarter to a half inch Possible, except higher Amounts possible in Thunderstorms. Lows in the lower to mid 40s. Light wind.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Riley Lake Temperature Statistics

June Temperature

Arlington Municipal Airport (11.2 miles)

  • Lowest 1 June, 2026

    39.9 °F

  • Average June

    62.6 °F

  • Highest 2 June, 2026

    82.9 °F

Climate (2021–Present)

Arlington Municipal Airport (11.2 miles)

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  • Average Low 2021–2026

    42.6 °F

  • Average 2021–2026

    50.9 °F

  • Average High 2021–2026

    59.9 °F
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