Weather By Day

January Weather In Seattle  
January Seattle Weather
Record High: 63°F
Normal High: 46°F
Normal Low: 36°F
Record Low: 11°F
Avg Monthly Rain: 5.13"
Rec 1 Day Rain: 2.44"
Avg Monthly Snow: 4.9"
Rec 1 Day Snow: 10"

Seattle Weather In January

The record high temperature in Seattle for the last 66 years in January was 63 degrees Fahrenheit, measured on January 30, 1960, and the typical high is 46. The lowest documented temperature for Seattle for the past 66 years in January was 11 registered on January 15, 1950, and the mean daily low in the month is 36.

United States NWS historical Seattle January Weather data records that on January 14, 1950, the high temperature did not exceed 20 degrees Fahrenheit, the lowest high measured in Seattle in the past 66 years. Weather Service records additionally show that on January 20, 1968, the recorded low temperature for the day did not drop below 52 degrees, the highest low measured in Seattle in the last 66 years.

Weather Service historical data shows that the average daily high temperature in Seattle on January First is 45 degrees Fahrenheit and the average high on the last day of January is 47 degrees. The daily low temperature in Seattle on January First averages 36 degrees Fahrenheit and the low on the last day of January averages 38 degrees.

Seattle usually receives an average of 5.13 inches of rain during January. The most precipitation recorded on a single day in January, according to January Seattle Weather data, was 2.44 inches on January 19, 1967. Seattle averages 4.9 inches of snow in January. The most snow recorded in a single day in January was 10 inches on January 13, 1950.