Average data for 10 years
1 December
Monday
+6°
+1°
2 December
Tuesday
+5°
0°
3 December
Wednesday
+5°
0°
4 December
Thursday
+4°
0°
5 December
Friday
+4°
−1°
6 December
Saturday
+4°
0°
7 December
Sunday
+3°
−1°
8 December
Monday
+2°
−3°
9 December
Tuesday
+1°
−5°
10 December
Wednesday
+3°
−2°
11 December
Thursday
+3°
−2°
12 December
Friday
+3°
−2°
13 December
Saturday
+2°
−3°
14 December
Sunday
+2°
−3°
15 December
Monday
+2°
−2°
16 December
Tuesday
+2°
−3°
17 December
Wednesday
+2°
−3°
18 December
Thursday
+3°
−3°
19 December
Friday
+2°
−4°
20 December
Saturday
0°
−4°
21 December
Sunday
+1°
−5°
22 December
Monday
+1°
−3°
23 December
Tuesday
+2°
−3°
24 December
Wednesday
+3°
−2°
25 December
Thursday
+2°
−3°
26 December
Friday
+1°
−4°
27 December
Saturday
+1°
−3°
28 December
Sunday
+2°
−4°
29 December
Monday
+2°
−4°
30 December
Tuesday
+1°
−4°
31 December
Wednesday
0°
−5°
Cities near you
United States
Boston
Canada
Montreal
United States
Colchester
Canada
Quebec
United States
Brookhaven
Cities with similar weather in December
Finland
Helsinki
Latvia
Riga
Estonia
Tallinn
Sweden
Stockholm
Norway
Oslo
In December, the weather in Portland is typically cold. Average daily high temperature in December is about 2 degrees above zero. On average, Portland has 10 partly cloudy, 9 sunny, 5 cloudy, 4 rainy, and 3 snowy days in December. The rains are usually heavy. December as well as January, February, March, and April is considered the most uncomfortable time to visit Portland.