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Sylvan Weather Forecast
| TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY |
 |  |  |  | | |  |  | | | | |
| Partly Cloudy | Patchy Fog | Mostly Cloudy | Mostly Cloudy | Partly Cloudy | Partly Sunny | Mostly Clear | Mostly Sunny | Mostly Clear | Mostly Cloudy | Partly Cloudy | Mostly Cloudy |
| Lo: 46°FLo: 8°C | Hi: 65°FHi: 18°C | Lo: 50°FLo: 10°C | Hi: 66°FHi: 19°C | Lo: 50°FLo: 10°C | Hi: 70°FHi: 21°C | Lo: 51°FLo: 11°C | Hi: 73°FHi: 23°C | Lo: 51°FLo: 11°C | Hi: 70°FHi: 21°C | Lo: 51°FLo: 11°C | Hi: 67°FHi: 19°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 236 PM PDT Wed Sep 30 2026 
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Issued: 834 PM PDT Wed Sep 30 2026
Aviation
... Widespread VFR conditions with some high level clouds spreading into the area from the west-northwest. VFR conditions are expected overnight, with a similar - albeit less widespread scenario of MVFR to IFR conditions with fog and areas of low stratus Thursday morning. High resolution ensemble guidance (LAMP) indicating the best odds in the most sheltered locations particularly south of Puget Sound (KOLM). Northwesterly winds 7-9 kts will east late evening becoming northeast at many l...