South Fork Tolt Reservoir Weather Forecast

    • 39
    • 47

    Rain

    • 37
    • 50

    Chance Rain/Snow

    • 38
    • 56

    Mostly Sunny

    • 38
    • 59

    Partly Sunny

    • 40
    • 58

    Slight Chance Rain

    • 41
    • 59

    Chance Rain

Today 22 Apr Cascades of Snohomish and Northern King Counties

Rain and snow in the Morning, then rain and snow likely in the afternoon. Snow level near 5500 feet. Rainfall Amounts a half inch to one inch possible. No snow accumulation. Afternoon pass Temperatures in the lower 40s. West wind in the Passes 10 to 15 Mph.

Tonight 22 Apr Cascades of Snohomish and Northern King Counties

A chance of snow in the evening. A chance of rain. Snow likely after midnight. Snow level near 5000 feet decreasing to 4000 feet after midnight. Rainfall Amounts a quarter to a half inch possible. Lows in the lower 30s. West wind in the Passes around 10 Mph.

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  • Temperature Real-Time

South Fork Tolt Reservoir Temperature Statistics

April Temperature

Renton Municipal Airport (29.2 miles)

  • Lowest 8 April, 2026

    36 °F

  • Average April

    51.4 °F

  • Highest 19 April, 2026

    75.9 °F

Climate (2021–Present)

Renton Municipal Airport (29.2 miles)

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  • Average Low 2021–2026

    47.5 °F

  • Average 2021–2026

    54.7 °F

  • Average High 2021–2026

    62.3 °F
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