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Marquam Lake Weather Forecast
| THIS AFTERNOON | TONIGHT | TUESDAY | TUESDAY NIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT |
 |  |  |  |  | |  |  |  | | | |
| Mostly Sunny | Smoke | Mostly Cloudy | Chance of Rain | Rain | Rain | Chance of T-Storm | Chance of T-Storm | Chance of Rain | Chance of Rain | Chance of Rain | Chance of Rain |
| Hi: 85°FHi: 29°C | Lo: 59°FLo: 15°C | Hi: 75°FHi: 24°C | Lo: 59°FLo: 15°C | Hi: 69°FHi: 21°C | Lo: 55°FLo: 13°C | Hi: 69°FHi: 21°C | Lo: 51°FLo: 11°C | Hi: 70°FHi: 21°C | Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C | Lo: 55°FLo: 13°C |
| POP: 50% | POP: 100% | POP: 100% | POP: 100% | POP: 80% | POP: 50% | POP: 40% | POP: 20% | POP: 20% |
POP = Probability of Precipitation.
Weather Outlook Updated: 202 PM PDT Mon Aug 31 2026 
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Issued: 444 PM PDT Mon Aug 31 2026
Aviation
...Through 00z Wednesday...VFR flying conditions largely continue across the airspace this afternoon, although a pattern shift will see a southerly surge push northward along the coast and inland this evening and overnight, bringing widespread cig restrictions. South-southwesterly winds and bkn- ovc low clouds have spread along the central OR coast already as of 00z Tue, while west to northwest flow and mostly clear skies remain in place elsewhere. Along the coast, chances for IFR cigs w...