Salem, OR – Travelers across Oregon should expect a stormy and slow-moving weather pattern heading into Thanksgiving, with widespread rain for the lowlands and heavy snow likely in the Cascades, according to updated forecast maps from the Weather Prediction Center.
According to the WPC, moisture builds into the Pacific Northwest beginning Wednesday, delivering steady rain to the Oregon Coast, the Willamette Valley, Portland metro, and the I-5 corridor. Rain may be heavy at times from Eugene to Salem and into Portland, creating slower travel during one of the busiest days of the year. Winds along the coast could also become gusty during the day.
In the mountains, snow begins to intensify Wednesday afternoon and evening across the Cascade passes, including Santiam Pass (US-20/OR-22), Government Camp (US-26), and Willamette Pass (OR-58). Accumulations may become significant at higher elevations, with roads turning slick or snow-covered. Travel into Central Oregon, including Bend, Sisters, and La Pine, may be impacted later in the day.
Thanksgiving Day (Thursday, November 27, 2025) will keep the storm pattern active. Rain continues west of the Cascades, though precipitation may ease at times. Cascade snow persists, especially above 3,500 to 4,000 feet. Eastern Oregon sees colder temperatures with scattered snow showers near La Grande, Baker City, and along I-84 through the Blue Mountains.
By Black Friday (November 28, 2025), colder air deepens statewide. Scattered valley showers are expected, but Cascades and Blue Mountains snow remains the biggest travel concern. Early-morning shoppers should be prepared for icy spots in Central and Eastern Oregon.
Drivers crossing the Cascades or traveling along mountain routes should allow extra time and monitor updated advisories.
