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 ( date VARCHAR, max_temperature_f VARCHAR, min_temperature_f VARCHAR )

### Question ###
Find the day in which the difference between the max temperature and min temperature was the smallest. Also report the difference.

### Accurate SQL ###

SELECT date, max_temperature_f - min_temperature_f FROM weather ORDER BY max_temperature_f - min_temperature_f LIMIT 1