Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
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.
### Answer:
SELECT date, max_temperature_f - min_temperature_f FROM weather ORDER BY max_temperature_f - min_temperature_f LIMIT 1