Cotton bales are stored for various lengths of time after ginning in any given year depending on crop size as well as market demand. Storage of cotton bales in covered warehouses is the general industry practice for most of the U.S. cotton belt. However, some cotton bales are stored in outside holding yards by producer preference and, for the past two harvest seasons, because of lack of available indoor storage due to the size of the U.S. cotton crop. Data is lacking on the relative effects on cotton quality between outside and inside storage of cotton bales. A one year bale storage test was initiated to determine the effects of long-term outside and inside storage conditions on fiber and textile processing quality. Ten bales were stored in an approved warehouse and ten bales were stored in an outside storage yard. The bales were covered with a specially formulated linear low density polyethylene (LLDPE) film with UV inhibitors. Each bale was sampled to determine HVI properties at the time of ginning and then instrumented with a temperature and humidity recorder prior to being placed in storage. The report will analyze any differences in cotton quality factors due to storage from raw fiber through textile processing.