Portland Weather In January
The highest recorded temperature for Portland for the past 70 years in January was 66 degrees Fahrenheit, most recently measured on January 18, 2005, and the typical high is 31. The record low January temperature in Portland for the last 70 years was -40 registered on January 15, 1956, and the regular low is 12.
According to National Weather Service historical Portland January Weather data, on January 31, 1950, the high temperature did not exceed 16 degrees Fahrenheit, the lowest high measured in Portland in the past 70 years. Weather Service records additionally indicate that on January 6, 1957, the low for the day was not measured below 136 degrees, the highest low temperature recorded in Portland in the last 70 years.
Historical weather data accumulated by the National Weather Service shows that the average daily high temperature in Portland on January First is 44 degrees Fahrenheit and the average high on the last day of January is 39 degrees. The daily low temperature in Portland on January First averages 32 degrees Fahrenheit and the low on the last day of January averages 27 degrees.
Portland usually receives an average of 4.09 inches of rain during the month. According to January Portland Weather records, the most rain measured in a single day in January was 2.48 inches on January 6, 1948. Portland averages 19.3 inches of snow in January. The most snow recorded in a single day in January was 14.4 inches on January 21, 1943.