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Vashon Muni Weather Forecast
| TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY |
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| Partly Cloudy | Mostly Sunny | Chance of Rain | Mostly Cloudy | Partly Cloudy | Chance of Rain | Rain | Chance of Rain | Chance of Rain | Chance of Rain | Chance of Rain | Chance of Rain |
| Lo: 45°FLo: 7°C | Hi: 56°FHi: 13°C | Lo: 45°FLo: 7°C | Hi: 55°FHi: 13°C | Lo: 36°FLo: 2°C | Hi: 55°FHi: 13°C | Lo: 43°FLo: 6°C | Hi: 59°FHi: 15°C | Lo: 40°FLo: 4°C | Hi: 59°FHi: 15°C | Lo: 40°FLo: 4°C | Hi: 59°FHi: 15°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 236 PM PDT Wed Oct 21 2026 
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Issued: 224 PM PDT Wed Oct 21 2026
Aviation
... An upper level trough will form offshore tonight then shift inland on Thursday. The flow aloft is W to SW. Skies remain VFR this afternoon and evening with increasing high clouds over western WA. The flow will turn onshore with the front moving in on Thursday. The cirrus clouds will be thin enough for patchy low clouds and fog in the interior again Thursday morning. Low clouds will burn off by 18-20z. Low level stratus clouds will increase Thursday night onshore flow. 33
KSEA...VFR to...