Weather WorldMason Lake, WA 7-Day Night Weather Forecast
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Mason Lake, WA Weather Forecast
Mason Lake, WA Weather Forecast Date: 236 AM PDT Thu Sep 03 2026
The area/counties/county of: Cascades Of Southern King County, including the city of Snoqualmie Pass.or toggle through each period.
Today... A slight chance of snow showers in the morning. Rain showers likely through the day. A chance of thunderstorms in the afternoon. Snow level near 6500 feet. Rainfall amounts a tenth to a quarter of an inch possible, except higher amounts possible in thunderstorms. No snow accumulation. Afternoon pass temperatures in the lower 50s. Light wind in the passes.
Tonight... Mostly cloudy. A chance of showers in the evening. Snow level near 7000 feet. Light wind in the passes.
Friday... Partly sunny. A slight chance of thunderstorms early in the afternoon. A chance of showers and a slight chance of thunderstorms late in the afternoon. Snow level near 7000 feet. Afternoon pass temperatures in the mid 50s. Light wind in the passes becoming southeast to 10 mph in the afternoon.
Friday Night... Mostly cloudy. A chance of showers in the evening. Snow level near 7500 feet. Light wind in the passes.
Saturday... Partly sunny. A chance of showers and a slight chance of thunderstorms in the afternoon. Snow level near 7500 feet. Afternoon pass temperatures in the upper 50s. Light wind in the passes.
Saturday Night... Mostly cloudy with a slight chance of showers in the evening, then partly cloudy after midnight. Snow level near 8000 feet.
Sunday... Partly sunny. A chance of showers and a slight chance of thunderstorms in the afternoon. Snow level near 8000 feet.
Sunday Night... Mostly cloudy in the evening then becoming partly cloudy. A slight chance of showers. Snow level near 8500 feet.
Labor Day... Mostly sunny with a slight chance of showers. Snow level near 8500 feet.
Monday Night... Mostly cloudy. A slight chance of showers in the evening. Snow level near 8500 feet.
Tuesday... Partly sunny. Freezing level near 11500 feet.
Tuesday Night... Partly cloudy. Freezing level near 12000 feet.
POP = Probability of Precipitation
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