If you thought Sunday was hot, San Diego, Monday will be even hotter.
A ridge of high pressure is creating a brief heat wave in Southern California, according to the National Weather Service.
NBC 7 Meteorologist Sheena Parveen said temperatures will be around 15 degrees above average for this time of year with some parts of San Diego County possibly seeing record-breaking temperatures.
"We have beach weather at the coast with highs in the mid-80s. It's going to be unseasonably hot," Parveen said. "Inland valleys around 90 degrees."
Monday was expected hottest day this week for areas west of the mountains, while the deserts are expected to reach peak heat on Tuesday, the National Weather Service said.
While Santa Ana winds are present, they are not expected to be strong. The mountains could see wind gusts of 25 miles per hour, Parveen said.
San Diego will rapidly cool down after that, and a large low-pressure system may bring wet and chilly conditions on Thursday, Parveen said. Temperatures will heat back up for a sunny and warm weekend.
"So far, the weekend looks good, looks like we should warm back up a little bit by Sunday," Parveen said.
A dry winter left California’s snowpack well below average but storms began showing up this month, including one that brought significant snowfall to the Sierra Nevada and rain elsewhere last week. The snowpack remains below average but the storms have helped.