January weather - Winter 2026 - Seattle, WA January is the first month it typically snows Throughout January, in the average 1 3 snowfall days, it receives 0 12" (3mm) of snow In Seattle, during the entire year, snow falls for 4 8 days and aggregates up to 0 94" (24mm) of snow In January, the average ocean temperature is 45 5°F (7 5°C)
January Weather in Seattle Washington, United States The average sliding 31-day snowfall during January in Seattle is decreasing, starting the month at 1 8 inches, when it rarely exceeds 6 4 inches or falls below -0 0 inches, and ending the month at 0 6 inches, when it rarely exceeds 1 6 inches or falls below -0 0 inches
Historical Weather Data Daily Archives (1970-2026) Access 55+ years of historical weather data for any US location Search daily temperature records, precipitation archives, and climate data from 139M+ NOAA observations
Seattle weather in January Get Seattle weather conditions in January We provide day and night temperatures, sunshine hours and precipitations averages for Seattle in January
Seattle Snow Report | OnTheSnow See latest Seattle ski conditions, updated daily with snowfall totals, snow depths, open lifts terrain for all ski resorts in Seattle
Seattle (WA) Weather in January: Temperature Rainfall Browse day-by-day weather records for Seattle spanning 51 years Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day