Residents across southwestern California are set to experience a warm sweep over the region, with the latest weather forecasts predicting rising temperatures through Tuesday. According to the National Weather Service (NWS) in San Diego, coastal areas can expect highs in the upper 70s to low 80s, valleys will see mid 80s to low 90s, Inland Empire areas could hit mid to upper 90s, and mountains are expected to reach the 80s. In comparison, the high desert may face mid 90s to 102 degrees, and the low desert looks at scorching temperatures ranging from 105 to 110 degrees.