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Summit Lakes, WA Weather Forecast
Summit Lakes, WA Weather Forecast Date: 848 PM PDT Thu Oct 22 2026
The area/counties/county of: Upper Slopes Of The Eastern Washington Cascades Crest, including the cities of: Roslyn and Easton.or toggle through each period.
Rest of Tonight... Mostly cloudy. Lows in the upper 20s to mid 30s. Breezy. Northwest wind 10 to 20 mph with gusts to around 40 mph.
Friday... Sunny. Areas of frost in the morning. Highs in the lower 40s to lower 50s. Northwest wind 5 to 15 mph with gusts to around 35 mph in the morning, becoming light.
Friday Night... Mostly clear. Widespread frost. Lows in the upper 20s to lower 30s.
Saturday... Partly sunny. Highs in the mid 40s to mid 50s.
Saturday Night... Mostly cloudy with a 20% chance of rain and high mountain snow showers. Lows in the lower to mid 30s.
Sunday... Mostly cloudy. A 50% chance of rain and mountain snow showers. Highs in the upper 30s to upper 40s, except in the upper 40s valleys. Lows in the lower to mid 30s.
Sunday Night... Mostly cloudy. A 50% chance of rain and mountain snow showers. Highs in the upper 30s to upper 40s, except in the upper 40s valleys. Lows in the lower to mid 30s.
Monday... Mostly cloudy with a 20% chance of rain and high mountain snow showers. Highs in the mid 30s to mid 40s, except in the 40s valleys. Lows in the upper 20s to upper 30s.
Tuesday... Mostly cloudy with a 20% chance of rain and high mountain snow showers. Highs in the mid 30s to mid 40s, except in the 40s valleys. Lows in the upper 20s to upper 30s.
Wednesday... Mostly cloudy. A 40% chance of rain and high mountain snow showers. Highs in the mid 30s to mid 40s, except in the mid 40s valleys. Lows in the upper 20s to mid 30s.
Wednesday Night... Mostly cloudy. A 40% chance of rain and high mountain snow showers. Highs in the mid 30s to mid 40s, except in the mid 40s valleys. Lows in the upper 20s to mid 30s.
POP = Probability of Precipitation
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