Source Lake, WA 7-Day Weather Forecast
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Source Lake Weather Forecast


Source Lake, WA Weather Forecast Date: 236 PM PDT Sat Sep 26 2026
Weather forecast for Source Lake, WA
| Tonight |
Tonight... Mostly cloudy. Freezing level near 9000 feet. Light wind in the passes. |
| Sun Hi: 59°FHi: 15°C |
Sunday... Partly sunny in the morning then becoming sunny. Freezing level near 9500 feet. Afternoon pass temperatures in the upper 50s. Light wind in the passes. |
| Mon Hi: 59°FHi: 15°C |
Monday... Mostly sunny. Freezing level near 10000 feet. Afternoon pass temperatures in the upper 50s. Light wind in the passes. |
| Tue |
Tuesday... Mostly cloudy with a chance of rain in the morning, then mostly cloudy with rain likely in the afternoon. Snow level near 9500 feet. |
| Wed |
Wednesday... Partly sunny. A chance of rain in the morning, then a slight chance of rain in the afternoon. Snow level near 7500 feet. |
| Thu |
Thursday... Partly sunny with a slight chance of rain. Snow level near 8000 feet. |
| Fri |
Friday... Mostly cloudy in the morning then becoming mostly sunny. Freezing level near 8500 feet. |
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