An excessive heat warning has been issued until at least 8 p.m. Thursday for the San Diego County deserts, where highs are expected to reach 114 degrees.
Coastal regions were also hot and humid Sunday, with a small but decreasing chance of rain and thunderstorms.
The National Weather Service is warning that elevated temperatures could lead to heat-related illness and reminds people to stay hydrated and limit strenuous outdoor activity, if possible.
On Saturday, San Diego County desert communities heated up to about 12 degrees warmer than Friday, with the most significant change in the eastern valleys and foothills.
Coastal communities were also significantly warmer Sunday than they were at the same time the day before. Sunday’s downtown San Diego high was expected to be 79, with a slight chance of showers and thunderstorms.
Highs above degrees 110 were expected Sunday and into next week in the desert, the NWS said. Desert lows will range from 82 to 92.
City News Service contributed to this report.
