Weather
Oregon Weather Alert: Portland Faces Days of Rain Oct 25-29
Portland, OR – Rain soaked streets, gray skies and repeated rounds of precipitation are expected to dominate the Portland metropolitan area's weather through much of the coming week. A prolonged stret
By Sophie Caldwell · 2026-10-25T11:10:20.705Z
Portland, OR – Rain soaked streets, gray skies and repeated rounds of precipitation are expected to dominate the Portland metropolitan area's weather through much of the coming week. A prolonged stretch of wet conditions begins Sunday, Oct. 25, with rain chances reaching 90%, followed by additional rainfall Monday, Tuesday and Wednesday. Temperatures will remain relatively steady in the 50s and near 60 degrees, but persistent precipitation could create challenging conditions for commuters, pedestrians and residents planning outdoor activities across the region.
According to the National Weather Service in Portland, rain is expected mainly after 9 a.m. Sunday, with a high near 56 degrees and south southeast winds around 3 to 5 mph. The probability of precipitation reaches 90%, with rainfall amounts between one quarter and one half inch possible during the day. Another 90% rain chance continues Sunday night, when temperatures fall toward 47 degrees and an additional one tenth to one quarter inch of precipitation is possible.
Several Days of Rain Expected Across Portland The unsettled pattern continues Monday, Oct. 26, with an 80% chance of rain and temperatures climbing to approximately 58 degrees. The National Weather Service indicates another one tenth to one quarter inch of rainfall could accumulate during the day. Monday night remains mostly cloudy, with a 70% chance of rain and patchy fog possible between 1 a.m. and 2 a.m. Tuesday.
By Tuesday, Oct. 27, rain remains likely, particularly after 11 a.m., with precipitation chances around 60%. Afternoon temperatures could briefly reach 60 degrees, making Tuesday the warmest day in the immediate forecast. Rain chances increase again to 70% Tuesday night, with temperatures dropping toward 45 degrees. The repeated precipitation periods suggest limited opportunities for extended dry conditions through the middle of the week.
Wet Roads Could Affect Portland Area Travel Wednesday, Oct. 28, remains a central concern for residents navigating the middle of the workweek. Rain is expected under cloudy skies, with afternoon temperatures reaching approximately 56 degrees. Additional rainfall continues Wednesday night as temperatures fall to around 42 degrees, extending the wet pattern into Thursday.
The prolonged precipitation could affect travel along Interstate 5, Interstate 84, Interstate 205 and U.S. Highway 26, particularly during morning and evening commuting periods. Wet pavement and reduced visibility during steadier rainfall may require additional stopping distance. However, the supplied forecast does not establish any road closures, flooding warnings or specific traffic disruptions.
Drivers should also remain mindful of changing visibility during early morning travel, especially following Monday night's forecast for patchy fog. Pedestrians and cyclists may encounter damp sidewalks, standing water in poorly drained locations and consistently cool conditions. Residents planning outdoor work or recreation should consider waterproof clothing and flexible schedules as rain remains a recurring feature.
When Could Portland Finally See Drier Weather? Thursday, Oct. 29, continues the rainy stretch with a high near 55 degrees, followed by additional rain likely Thursday night and a low around 40 degrees. Friday offers a possible transition toward improving weather, with partly sunny skies, a chance of rain and temperatures reaching approximately 56 degrees.
By Saturday, Oct. 31, the National Weather Service expects partly sunny conditions and a high near 57 degrees, with no precipitation mentioned in the supplied daytime forecast. That could provide a welcome break from several days of wet weather just in time for Halloween activities.
While the forecast supports a prolonged rainy period, it does not indicate that every hour will experience continuous rainfall. Residents should monitor updated precipitation timing as the week progresses.
Will Portland's extended stretch of rain affect your commute or Halloween weekend plans?
Five Day Weather Outlook Sunday 10/25: Rain develops mainly after 9 a.m., with a 90% precipitation chance, a high near 56 degrees and up to one half inch possible; rain continues Sunday night with a low around 47 degrees.
Monday 10/26: Rain continues with an 80% precipitation chance, a high near 58 degrees and up to one quarter inch possible; Monday night brings a 70% rain chance, patchy fog and a low near 47 degrees.
Tuesday 10/27: Rain remains likely, especially after 11 a.m., with a 60% precipitation chance and a high near 60 degrees; additional rain is likely Tuesday night at 70%, with a low around 45 degrees.
Wednesday 10/28: Cloudy skies and rain dominate the day, with temperatures reaching approximately 56 degrees; rain continues Wednesday night as temperatures fall toward 42 degrees, potentially keeping road surfaces wet into Thursday morning.
Thursday 10/29: Rain remains in the forecast with mostly cloudy skies and a high near 55 degrees; additional rainfall is likely Thursday night, with temperatures falling toward 40 degrees before a possible improvement Friday.
Extended Weather Outlook Friday, Oct. 30: Partly sunny skies are expected with a chance of rain and an afternoon high near 56 degrees. Friday night remains mostly cloudy with another chance of rain and a low around 39 degrees.
Saturday, Oct. 31 — Halloween: Partly sunny skies are expected with a high near 57 degrees. The supplied forecast does not indicate precipitation during the daytime period, although nighttime details are not yet available.