Weather By Day

December Portland Weather 
December Portland Weather
Record High: 65°F
Normal High: 36°F
Normal Low: 19°F
Record Low: 6°F
Avg Monthly Rain: 4.24"
Rec 1 Day Rain: 2.16"
Avg Monthly Snow: 14.7"
Rec 1 Day Snow: 8"

Portland Weather In December

The record high December temperature in Portland Maine for the last 70 years was 65 degrees Fahrenheit, most recently registered on December 10, 1993, while the mean high temperature is 36. The lowest documented temperature in December for Portland for the past 70 years was 6 most recently measured on December 16, 1964, while the standard low daily temperature for the month is 19.

United States National Weather Service historical Portland December weather data indicates that on December 24, 1949, the measured high temperature did not exceed 48 degrees Fahrenheit, the lowest high measured in Portland in the past 70 years. The Weather Service additionally shows that on December 25, 1980, the low for the day did not drop below 60 degrees, the highest low temperature in Portland in the last 70 years.

Weather Service historical data shows that the average daily high temperature in Portland on December First is 44 degrees Fahrenheit and the average high on the last day of December is 39 degrees. The low measured temperature in Portland on December First averages 32 degrees and the low on the last day of the month averages 27 degrees.

Portland receives an average of 4.24 inches of precipitation during December. December Portland Weather records indicate that on December 27, 1942 Portland received 2.16 inches of precipitation, the highest amount of rain recorded in a single day in December. Portland averages 14.7 inches of snow in December. The highest snowfall measured in a single day in December was 8 inches on December 19, 1964.