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Barrett Lake, WA 7-Day Night Weather Forecast
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Barrett Lake, WA Weather Forecast
Barrett Lake, WA Weather Forecast Date: 236 PM PDT Tue Sep 01 2026
The area/counties/county of: Lowlands Of Western Whatcom County, including the cities of: Bellingham, Sumas, Blaine, and Lynden.or toggle through each period.
Tonight... Windy. Mostly cloudy. A slight chance of rain late in the evening. Lows in the mid 50s to lower 60s. South wind 10 to 15 mph increasing to southeast 20 to 30 mph after midnight.
Wednesday... Windy. Mostly cloudy. A slight chance of rain early in the afternoon. A chance of showers and a slight chance of thunderstorms late in the afternoon. Highs in the upper 60s to mid 70s. Southeast wind 20 to 30 mph becoming south in the afternoon. Gusts to 40 mph.
Wednesday Night... Windy. Cloudy with rain at times in the evening, then mostly cloudy with a chance of rain after midnight. Rainfall amounts a tenth to a quarter of an inch possible. Lows in the lower to mid 50s. Southeast wind 15 to 30 mph.
Thursday... Breezy. Mostly cloudy with a chance of rain. Highs in the 60s to lower 70s. Southeast wind 15 to 25 mph becoming south 10 to 15 mph in the afternoon.
Thursday Night... Mostly cloudy. A slight chance of rain in the evening, then a chance of rain after midnight. Lows in the upper 40s to mid 50s. Light wind.
Friday... Partly sunny. A chance of rain in the morning, then a slight chance of rain in the afternoon. Highs in the mid to upper 60s.
Friday Night... Mostly cloudy. A chance of rain in the evening. Lows in the lower 50s.
Saturday... Mostly sunny. A slight chance of rain in the morning. Highs in the lower to mid 70s.
Saturday Night... Partly cloudy. Lows in the lower to mid 50s.
Sunday... Mostly sunny. Highs in the 70s.
Sunday Night... Partly cloudy. A slight chance of rain in the evening. Lows in the lower to mid 50s.
Labor Day... Mostly sunny. A slight chance of rain in the morning. Highs in the lower to mid 70s.
Monday Night... Partly cloudy in the evening then becoming mostly cloudy. A slight chance of rain. Lows in the mid 50s.
POP = Probability of Precipitation
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