Lynch Lake Weather Forecast

    • 42
    • 56

    Rain

    • 40
    • 57

    Mostly Cloudy

    • 43
    • 60

    Partly Sunny

    • 47
    • 58

    Chance Rain

    • 47
    • 56

    Chance Rain

    • 46
    • 60

    Mostly Cloudy

Today 25 Sep Foothills and Valleys of Snohomish and Northern King Counties

Rain likely in the Morning, then Showers and a chance of Thunderstorms in the afternoon. Rainfall Amounts a half inch to one inch Possible, except higher Amounts possible in Thunderstorms. Highs in the upper 50s to mid 60s. Light wind.

Tonight 25 Sep Foothills and Valleys of Snohomish and Northern King Counties

Rain in the Evening, then a chance of rain late in the evening. A slight chance of rain after midnight. Rainfall Amounts a half inch to one inch possible. Lows in the 40s. Light wind becoming south to 10 Mph after midnight. Gusts to 20 Mph.

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  • Temperature Forecast NOAA

  • Temperature Real-Time

Lynch Lake Temperature Statistics

September Temperature

Renton Municipal Airport (26.7 miles)

  • Lowest 6 September, 2026

    51.1 °F
  • Average September

    61.6 °F
  • Highest 9 September, 2026

    79 °F

Climate (2021–2026)

Renton Municipal Airport (26.7 miles)

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  • Average Low 2021–2026

    47.4 °F
  • Average 2021–2026

    54.7 °F
  • Average High 2021–2026

    62.2 °F
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