Lost Park, OR Weather Forecast
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Lost Park Weather Forecast
| THIS AFTERNOON | TONIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT |
| Sunny | Clear | Sunny | Mostly Clear | Mostly Sunny | Mostly Clear | Mostly Sunny | Mostly Clear | Sunny | Mostly Clear | Mostly Sunny | Partly Cloudy |
| Hi: 79°FHi: 26°C | Lo: 55°FLo: 13°C | Hi: 85°FHi: 29°C | Lo: 55°FLo: 13°C | Hi: 75°FHi: 24°C | Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C | Lo: 51°FLo: 11°C | Hi: 79°FHi: 26°C | Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C | Lo: 51°FLo: 11°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 202 PM PDT Wed Sep 16 2026 

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Issued: 230 PM PDT Wed Sep 16 2026
Discussion
...Now through Tuesday...Warmer conditions expected through Thursday as upper level ridging over the northeast Pacific slowly shifts eastward and a closed upper level low shifts southward over northern California. A surface thermal trough will support offshore flow across the Cascades and into the Foothills and western Columbia River Gorge while north to northeast winds will be expected elsewhere. Gusts up to 20 mph will remain possible across the Willamette Valley and up to 25 mph thr...
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