Yes, like in the BVI's you'll generally find that in the USVI's there will be higher room rates during the winter months and lower rates during the summer. FYI - this will be the case throughout the Caribbean.

While it is difficult to "generalize" you'll normally find most Caribbean hotels and resorts have 3 "rate seasons" as follows (dates will vary slightly and some may only have 2 "seasons):

High Season - Mid-December through Easter - Highest rates

Shoulder Season - November 1 to mid-December and from just after Easter to end of June - Rates lower than High Season but higher than Low Season

Low Season - End of June through end of October - Lowest rates of the year (Note: Many hotels & resorts close in September and October).