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About Lummi Island, WashingtonLummi Island, WA 7-Day Night Weather Forecast
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Lummi Island, WA Weather Forecast
Lummi Island, WA Weather Forecast Date: 236 AM PDT Sat Aug 08 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.
Today... Mostly cloudy until late afternoon then becoming sunny. Highs in the 70s. Light wind becoming southwest to 10 mph in the afternoon.
Tonight... Mostly clear. Lows in the 50s. South wind 10 to 15 mph Decreasing to 10 mph or less after midnight.
Sunday... Mostly sunny. Highs in the upper 60s to mid 70s. South wind to 10 mph becoming southwest in the afternoon.
Sunday Night... Partly cloudy. Patchy fog after midnight. Lows in the mid to upper 50s. Southwest wind to 10 mph in the evening becoming light.
Monday... Mostly sunny. Patchy fog in the morning. Highs in the upper 60s to mid 70s. South wind to 10 mph becoming southwest in the afternoon.
Monday Night... Mostly clear. Lows in the mid 50s.
Tuesday... Sunny. Highs in the 70s.
Tuesday Night... Mostly clear. Lows in the mid to upper 50s.
Wednesday... Mostly sunny. Highs in the mid to upper 70s.
Wednesday Night... Partly cloudy. Lows in the mid to upper 50s.
Thursday... Sunny. Highs near 80.
Thursday Night... Mostly clear. Lows in the upper 50s.
POP = Probability of Precipitation
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