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Seattle, Washington – Christmas travel preparations are ramping up across Washington as one of the busiest travel periods of the year approaches, and late-week weather could significantly impact plans during the Dec 19–Dec 23 window. An active Pacific pattern is expected to bring widespread precipitation, with rain in lower elevations and snow or freezing rain in the mountains.
Sunday remains relatively quiet, but conditions turn increasingly unsettled by mid- to late week. According to the National Weather Service in Seattle, periods of rain are likely late Thursday into Friday across western Washington, with heavier rainfall possible at times. Snow levels are expected to fluctuate, raising concerns for rain changing to snow or freezing rain in higher elevations and mountain passes, especially overnight.
For the Seattle metro, steady rain is the primary concern, which could slow travel along I-5, I-90, SR-520, and I-405 during peak holiday departure times. Reduced visibility, standing water, and increased congestion are likely if heavier rain coincides with commuter and travel rushes. Ferry travelers should also prepare for possible delays due to weather and high passenger demand.
Mountain travel poses the greatest risk. Snoqualmie Pass, Stevens Pass, and White Pass could see snow-covered roads or icy conditions depending on timing and snow levels. According to the Washington State Department of Transportation, travelers should expect possible chain requirements, monitor pass conditions closely, and avoid non-essential mountain travel during periods of heavy precipitation.
Air travel at Seattle-Tacoma International Airport may also see delays if rain, low ceilings, or wind overlap with peak holiday traffic. Travelers are encouraged to arrive early, check flight status frequently, and build flexibility into itineraries.
With above-normal precipitation expected across the Pacific Northwest, this Christmas travel period is shaping up to be wet and timing-sensitive. Charging devices, packing emergency supplies, and planning extra travel time will be key as holiday traffic ramps up across Washington.
