Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE city (city_id VARCHAR, city VARCHAR)
TABLE: CREATE TABLE temperature (Jan VARCHAR, city_id VARCHAR)

### Question ###
Give me the temperature of Shanghai in January.

### Accurate SQL ###

SELECT T2.Jan FROM city AS T1 JOIN temperature AS T2 ON T1.city_id = T2.city_id WHERE T1.city = "Shanghai"