Weather WorldHappy Valley, OR Weather Forecast
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| REST OF TONIGHT | SUNDAY | SUNDAY NIGHT | MONDAY | MONDAY NIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY |
 |  |  | | | | | | | | | |
| Clear | Sunny | Partly Cloudy | Mostly Sunny | Mostly Clear | Mostly Sunny | Clear | Sunny | Clear | Sunny | Mostly Clear | Mostly Sunny |
| Lo: 55°FLo: 13°C | Hi: 81°FHi: 27°C | Lo: 55°FLo: 13°C | Hi: 79°FHi: 26°C | Lo: 55°FLo: 13°C | Hi: 79°FHi: 26°C | Lo: 51°FLo: 11°C | Hi: 79°FHi: 26°C | Lo: 51°FLo: 11°C | Hi: 80°FHi: 27°C | Lo: 51°FLo: 11°C | Hi: 71°FHi: 22°C |
POP = Probability of Precipitation.
Weather Outlook Updated: 201 AM PDT Sun Oct 04 2026 
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Issued: 430 AM PDT Sun Oct 4 2026
Aviation
...Through 12z Monday...Latest terminal observations depict widespread LIFR conditions within fog along the north and central Oregon coast while inland terminals in the southern Willamette Valley and sheltered peripheral valleys are beginning to see fog develop, yielding restricted conditions. Dense fog and LIFR vis/cigs are likely (60-80% chance) to prevail at coastal terminals until 17-18z Sun, when daytime heating and increasing winds will aid in mixing out low clouds. While VFR condi...