A girl splashes in the ocean just before sunset. Photo by Chris Stone
A girl splashes in the ocean just before sunset. Photo by Chris Stone

Drier air and mostly clear skies were predicted for San Diego County on Monday, with frost and pockets of freezing temperatures overnight Sunday in the valleys and deserts, the National Weather Service said.

A freeze warning from the NWS was issued for midnight Sunday to 9 a.m. Monday for the deserts and a frost advisory was issued for the same time period for the valleys.

High temperatures on Monday are predicted to reach 61 along the coast, 59 to 64 in the valleys, 54 to 60 in the mountains, and 62 to 67 in the deserts, according to the weather agency.

At low-lying beaches Monday morning, high tides of around 7 feet were predicted, resulting in brief periods of minor tidal overflow.

A significant return of the marine layer was expected beginning Monday afternoon and lasting into Tuesday morning. Low clouds should reach the coast beginning late Monday and spread inland into the western valleys Monday night and Tuesday morning.

A weak ridge was forecast to drift over the state midweek, pushing temperatures back to average or above, the NWS said. A warming trend was forecast to begin Tuesday with Thursday likely the warmest day.

Some light marine layer precipitation, mainly west of the mountains, was predicted for Friday night and Saturday, but only minor accumulations.

City News Service contributed to this article.