Portland, OR Weather Alert: 80% Rain Today Slows I-5 Travel, Showers Continue Into Monday

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Oregon – Rain is already spreading across Portland this afternoon, turning streets slick and slowing traffic along I-5 and I-84 as showers fill in. Water is pooling along curbs, and visibility dips at times, making for a slower and more cautious drive across the metro right now.

According to the National Weather Service, rain and possible thunderstorms will develop through the afternoon, with an 80% chance of precipitation and rainfall totals between a tenth and a quarter inch. Showers ease briefly later, but another round arrives Sunday with a 50% chance of rain, followed by steadier rainfall Sunday night into Monday.

Across the Portland metro, including Beaverton, Gresham, and Vancouver, WA, roads will remain wet through Sunday night. Expect slick conditions on major corridors like US-26 and I-205, especially during heavier bursts. Plan extra time if traveling and keep headlights on during reduced visibility.

Rain continues into Monday with a 60% chance, keeping temperatures in the upper 50s. Cooler air settles in by Tuesday, with highs dropping into the mid-50s and continued rain likely. That cooler pattern may lower snow levels in the Cascades by midweek, adding a late-season winter feel to higher elevations.

For now, expect steady rain and slow travel through Sunday night with only brief breaks. Keep rain gear close and monitor updates as this system evolves.

Five Day Forecast for Portland, OR
Saturday: Showers and possible thunderstorms, high near 65°F
Sunday: Chance of rain, high near 61°F
Monday: Rain likely, high near 58°F
Tuesday: Rain likely, high near 55°F
Wednesday: Rain, high near 53°F