LOS ANGELES - It’s heating up across the United States, and there isn’t any sign of relief on the horizon.According to the National Oceanic and Atmospheric Administration’s Climate Prediction Center, hotter than normal temperatures are expected to continue across most of the United States through the summer.According the CPC’s three-month outlook, hotter than normal temperatures are likely for the majority of the United States in July, August and September — especially in the West and Northwest.A map shows the NOAA's Climate Prediction Center's three-month outlook.A significantly smaller section of the South and Midwest has equal chances for above, normal and below-average temperatures.RELATED: Earth just had its hottest January in recorded.