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Copalis Beach Weather Forecast
| TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY |
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| Mostly Cloudy | Patchy Fog | Patchy Fog | Patchy Fog | Mostly Clear | Sunny | Partly Cloudy | Partly Sunny | Mostly Cloudy | Partly Sunny | Partly Cloudy | Mostly Sunny |
| Lo: 50°FLo: 10°C | Hi: 65°FHi: 18°C | Lo: 50°FLo: 10°C | Hi: 70°FHi: 21°C | Lo: 53°FLo: 12°C | Hi: 70°FHi: 21°C | Lo: 53°FLo: 12°C | Hi: 67°FHi: 19°C | Lo: 53°FLo: 12°C | Hi: 67°FHi: 19°C | Lo: 51°FLo: 11°C | Hi: 67°FHi: 19°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 236 PM PDT Mon Sep 14 2026 
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Issued: 854 PM PDT Mon Sep 14 2026
Aviation
... A broad upper trough remains over the Pacific Northwest through Tuesday. Light onshore flow and scattered to broken mid level clouds are maintaining VFR ceilings this evening, but a few patches of low clouds or fog may develop tonight in the South Sound. Otherwise, as the trough passes through early tomorrow, expect brief MVFR ceilings and a few light rain showers across the interior. Dry, northerly flow will follow Tuesday afternoon and evening with a return to VFR conditions.
KSEA.....