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.
Lynch Lake Temperature Statistics
September Temperature
Renton Municipal Airport (26.7 miles)
Lowest 6 September, 2026
51.1 °FAverage September
61.6 °FHighest 9 September, 2026
79 °F
Climate (2021–2026)
Renton Municipal Airport (26.7 miles)
Average Low 2021–2026
47.4 °FAverage 2021–2026
54.7 °FAverage High 2021–2026
62.2 °F