Polar easterlies may dominate alaska's prevailing winds, and ne trade winds may dominate in hawaii, but dominate the prevailing winds of the "lower 48" (contiguous) united states.

Westerlies

Explanation:

The lower 48 is also called the contiguous states i.e United States and this zone is separated from Alaska and Hawaii islands. Her westerlies along with tradewinds drive temperature in these states. These winds generally occur in 30 to 60 degrees latitude.