Weather WorldSource Lake, WA Weather Forecast
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Source Lake Weather Forecast
| TONIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY |
 |  |  |  |  | |  |  | |  | | |
| Rain and Snow | Partly Sunny | Mostly Cloudy | Mostly Sunny | Mostly Clear | Mostly Sunny | Chance of Rain | Rain | Chance of Rain | Chance of Rain | Chance of Rain | Rain and Snow |
| Hi: 51°FHi: 11°C | Hi: 59°FHi: 15°C | ||||||||||
POP = Probability of Precipitation.
Weather Outlook Updated: 236 PM PDT Fri Sep 25 2026 
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Issued: 228 PM PDT Fri Sep 25 2026
Aviation
... Upper level low will exit the region this evening with showers tapering off. However, could still see shower activity with the convergence zone in King and Snohomish counties, especially in the Cascades. Ceilings are a mixed bag with VFR along the coast and MVFR to IFR in the interior. Will continue to see pockets of MVFR and IFR overnight, then becoming VFR Saturday afternoon with high pressure and drier conditions. SW to W gusty winds to 20-30kt will continue this afternoon with hi...