As summer approaches, starting Sunday, June 21, a significant heat wave is expected across the U.S. West, particularly in areas like the Northwest and Texas. In contrast, the Northeast and Great Lakes regions are predicted to experience cooler temperatures. The NOAA has indicated specific locations likely to endure extreme heat this summer, while forecasts for July to September suggest continued high temperatures in the western states. Californians can also expect a very hot weather pattern as the season unfolds.