A warming trend is expected in San Diego County for the beginning of the first week of summer, followed by gradual cooling into next weekend, according to the National Weather Service.
By mid-week, temperatures are expected to be a few degrees above average along the coast and 5-10 degrees above average inland, NBC 7's meteorologists said.
For the first half of the week, widespread moderate to major heat risk is possible for the deserts, and widespread minor to locally moderate heat risk for the inland valleys and mountains.
"A warming trend will continue into Thursday as high pressure builds over the western states, with Wednesday and Thursday likely be the warmest days," the NWS said. "Daytime high temperatures on those days will likely be 5 to 10 degrees above average for inland locations with localized areas of moderate heat risk away from the coast, and areas of major heat risk in the low desert."