Hawaii was granted statehood in 1959. From June to September the temperature averages mid to high 80's during the day and mid 70's at night. Hawaii is subject to frequent but brief rains throughout the day. Hawaii is the one of the more expensive states to visit in the U.S. Hotel rates vary, but bear in mind that hotel rates rise in proportion to beach proximity. The closer you are to the beach, the more you can expect to pay.
Food is also a little more expensive than other U.S. destinations.
If you want to save money, you should investigate vacation packages which bundle the cost of airfare, hotel, and often food and attractions into a reasonably priced package. However, as with any tour, what you gain in price will cost you in freedom. You have less choices about your travel when you book a tour. The Quadrantids are best viewed far away from artificial light sources. Sailboat charters are available but seats are limited so reservations are recommended.