Weather WorldWillamette Stone State Park, OR Weather Forecast
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Willamette Stone State Park Weather Forecast
| THIS AFTERNOON | TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT |
 |  | |  |  | | | | |  | | |
| Sunny | Clearing | Sunny | Mostly Clear | Partly Sunny | Partly Cloudy | Mostly Sunny | Partly Cloudy | Mostly Cloudy | Chance of Rain | Mostly Cloudy | Clearing |
| Hi: 81°FHi: 27°C | Lo: 55°FLo: 13°C | Hi: 81°FHi: 27°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 | Hi: 80°FHi: 27°C | Lo: 55°FLo: 13°C | Hi: 75°FHi: 24°C | Lo: 55°FLo: 13°C |
| POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 202 PM PDT Mon Aug 17 2026 
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Willamette Stone State Park Forecast Discussion
Issued: 218 PM PDT Mon Aug 17 2026
Discussion
...Tonight through Saturday...Minimal changes to the forecast as dry and warm conditions continue through the week with minimal weather impacts. The large-scale pattern remains stagnant through the period as a cul looks to persist off of the OR/WA coast within the upper levels of the atmosphere. This is resulting in relatively calm winds and stagnant conditions. However, this pattern is at least maintaining northerly surface winds which will keep daytime h...