Portland is starting Tuesday under light rain and a chilly 52 degrees, with more showers on the way. Rain is expected to continue on and off through the afternoon, with a high near 59 before another wet round arrives Tuesday night. It is the kind of day when an umbrella stops being an accessory and becomes basic equipment.
Showers Hang On Through Tuesday Night
The National Weather Service Portland forecast calls for rain showers before 5 p.m. Tuesday, with a slight chance of precipitation during the day and a 90% chance Tuesday night. Tuesday night looks wetter, with showers after 8 p.m., a low around 46 and southwest gusts reaching up to 28 mph.
Wednesday Brings More Showers
Wednesday brings showers, with a high near 57. Precipitation is expected to continue through Friday. The forecast is less about one dramatic storm than a steady parade of wet systems moving through the region.
Cascade Travel Could Turn Wintry
People heading east from Portland should be ready for changing conditions in the Cascades. Snow levels are expected to fall toward 4,000 to 4,500 feet by Wednesday, with light accumulations possible at pass level and elevated chances for an inch of snow around Santiam and Willamette passes. Winter driving conditions are possible, especially for anyone traveling over the mountains after dark.
A Wetter Thursday, Then A Slow Drying Trend
Thursday brings rain, with a high near 56. Friday may bring showers and partly cloudy skies. Saturday carries a 10–20% chance of light rain, though the overall pattern begins to dry out in time for Halloween plans.
Halloween Weekend Looks Better
Saturday brings a 10–20% chance of light rain, with temperatures falling through the 40s Saturday afternoon and evening. Sunday looks like the clear winner, with mostly sunny skies and a high near 58, followed by likely showers Monday. The shift is a notable improvement from the rain-heavy forecast covered in Hoodline’s earlier Portland forecast.
No Marine Advisories In Effect
No watches, warnings or advisories are in effect for the Portland area, coastal waters or the Columbia River Bar. A northwesterly swell will build late Tuesday into Wednesday, while winds and seas ease.
