A rental car is useful for off-resort activities but not strictly necessary. The American Club provides complimentary shuttle service to Whistling Straits, and Blackwolf Run is adjacent to the hotel. Rental cars from Milwaukee run $30 to $75 per day. The golf season runs May through October; June through September delivers the best weather, with July and August averaging highs near 79 degrees. The American Club's golf packages, booked directly through the resort or by calling 855-444-2838, typically offer better value than assembling the trip from individual bookings. Club rentals are available at $100 per person per round if you are traveling without equipment.