Willow Creek Park, OR Weather Forecast
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Willow Creek Park Weather Forecast
| TODAY | TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT |
| Chance of T-Storm | Mostly Cloudy | Partly Sunny | Mostly Cloudy | Mostly Sunny | Partly Cloudy | Mostly Sunny | Mostly Clear | Mostly Sunny | Mostly Clear | Mostly Sunny | Mostly Clear |
| Hi: 81°FHi: 27°C | Lo: 55°FLo: 13°C | Hi: 85°FHi: 29°C | Lo: 55°FLo: 13°C | Hi: 89°FHi: 32°C | Lo: 55°FLo: 13°C | Hi: 85°FHi: 29°C | Lo: 55°FLo: 13°C | Hi: 81°FHi: 27°C | Lo: 55°FLo: 13°C | Hi: 85°FHi: 29°C | Lo: 59°FLo: 15°C |
| POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 501 AM PDT Sat Aug 15 2026 

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Willow Creek Park Forecast Discussion
Issued: 448 AM PDT Sat Aug 15 2026
Discussion
...Today through Friday...Radar imagery as of early Saturday afternoon depicts isolated showers across the Cascades due to an unstable layer in the mid-levels of the atmosphere. This instability remains above an inversion present around 3000-5000 ft. Mesoanalysis suggests MUCAPE values are currently 100-250 J/kg across interior valleys and the Cascades, which is supporting convection. Vorticity from an upper level trough as well as monsoonal moisture from ...
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