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 temperature ( city_id number, jan number, feb number, mar number, apr number, jun number, jul number, aug number, sep number, oct number, nov number, dec number )
TABLE: CREATE TABLE hosting_city ( year number, match_id number, host_city text )
TABLE: CREATE TABLE city ( city_id number, city text, hanzi text, hanyu_pinyin text, regional_population number, gdp number )
TABLE: CREATE TABLE match ( match_id number, date text, venue text, score text, result text, competition text )

### Question ###
What is the temperature of 'Shanghai' city 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"