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 weather (zip_code VARCHAR, mean_temperature_f INTEGER, date VARCHAR)

### Question ###
For each zip code, return the average mean temperature of August there.

### Accurate SQL ###

SELECT zip_code, AVG(mean_temperature_f) FROM weather WHERE date LIKE "8/%" GROUP BY zip_code