Portland is waking up Sunday under mostly cloudy skies and temperatures in the mid-50s, with a few showers still possible before lunchtime. The city should reach about 59 degrees, making Sunday the quieter half of a weather pattern that turns much wetter Monday.
Showers could linger before 1 p.m., but the afternoon is expected to stay mostly cloudy with light southwest winds. Early Monday could bring patchy fog or a slight chance of rain.
Monday Brings The Week’s Biggest Soak
Rain is expected to develop in Portland after 11 a.m. Monday, then continue as showers into the evening. The forecast calls for a 90% chance of rain, a high near 58 and about one-tenth to one-quarter inch of new rain.
Monday night stays wet, with showers mainly before 10 p.m. and less than one-tenth inch of additional rain expected; the low will be around 51. Rain developing after 11 a.m. could affect travel during the midday commute. The latest Portland forecast gives the timing, low and rainfall amount.
A Brief Break Arrives For Veterans Day
Tuesday remains unsettled, with rain showers likely and a high near 63. Wednesday, Veterans Day, looks mostly cloudy but considerably drier, with a high near 65 and only a minimal rain chance.
The break will not last long: Thursday brings a slight chance of light rain after 4 p.m., followed by likely rain Friday and Saturday. Highs should stay seasonably mild, near 59 Friday and 58 Saturday.
Monday’s rain is part of a broader active pattern, not an isolated wet day. The National Weather Service sees a drier stretch Wednesday into early Thursday, then increasing odds of heavier rain next weekend: there is a 30% to 40% chance of at least 1.5 inches in 48 hours along the I-5 corridor and a 50% to 60% chance along the coast. Repeated rain could leave soils increasingly saturated, raising runoff concerns. The Portland forecast discussion says potential flooding will continue to be monitored.
Coast Visitors Face Dangerous Surf Sunday
Anyone heading west should take the coastal warnings seriously. The forecast calls for waves of 20 to 27 feet, while current warnings cite breakers of 28 to 33 feet on the north and central coast; the south-coast warning calls for breakers of 25 to 33 feet. High Surf Warnings are in effect along the Oregon coast through 10 p.m.
Forecasters are also warning about sneaker waves, and visitors should stay off logs. Stay well back from the water, avoid jetties and exposed rocks, and do not turn your back on the ocean.
The surf threat involves more than an unusually large wave washing over the beach. The National Weather Service forecasts a powerful westerly swell with a dominant period of 15 to 16 seconds, a combination it says can drive beach erosion and dislodge logs that roll up and down the shore. The office warns that moving logs have historically killed or seriously injured beachgoers. Its beach-hazards discussion details the swell and log danger.
