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Benton County Weather Forecast
| THIS AFTERNOON | TONIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT |
 |  |  | | |  | | | | | | |
| Chance of Rain | Patchy Fog | Mostly Sunny | Patchy Fog | Patchy Fog | Mostly Clear | Sunny | Clear | Sunny | Clear | Sunny | Mostly Clear |
| Hi: 69°FHi: 21°C | Lo: 49°FLo: 9°C | Hi: 71°FHi: 22°C | Lo: 49°FLo: 9°C | Hi: 71°FHi: 22°C | Lo: 50°FLo: 10°C | Hi: 80°FHi: 27°C | Lo: 55°FLo: 13°C | Hi: 85°FHi: 29°C | Lo: 51°FLo: 11°C | Hi: 81°FHi: 27°C | Lo: 51°FLo: 11°C |
| POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 202 PM PDT Sun Sep 13 2026 
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Issued: 1220 AM PDT Sat Sep 13 2026
Discussion
...Now through Friday...This afternoon an upper- level low pressure system continues to move towards the coastline with rain and showers expected to further develop headed into the evening hours. This precipitation likely persists at times overnight into Sunday morning as the upper low gradually shifts eastward. From this afternoon through Sunday evening most locations from the coast into the Willamette Valley should see around 0.10-0.30 inch of rainfall; measurable amounts but not muc...