From the National Weather Service, Climate Prediction Center:

Summary of the Outlook for Non-Technical Users

“The June-July-August (JJA) 2023 temperature outlook favors above normal temperatures over the western contiguous United States (CONUS), the southwest, southeast, and along the eastern seaboard to New England. A tilt toward warmer than normal temperatures is also favored over most of Alaska. The largest probabilities of above normal temperatures (60 to 70 percent) are forecast over the Southwest, and probabilities reach 50 to 60 percent along the coast from Texas to New England. The JJA precipitation outlook favors below normal precipitation probabilities over the Pacific Northwest, Southwest, and south coast of Alaska. Above normal precipitation probabilities are more likely for the eastern CONUS, including the Southeast, Mid-Atlantic, Lower and Middle Mississippi Valley. The North Slope of Alaska also tilts weakly above normal. Equal chances (EC) are forecast for areas where probabilities for each category of seasonal mean temperatures and seasonal accumulated precipitation amounts are expected to be similar to climatological probabilities.”