A trough of low pressure over the western states was predicted to maintain below average high temperatures Monday through Wednesday in San Diego County, the National Weather Service said.
Night and morning coastal low clouds were expected to spread farther into the valleys early Tuesday and Wednesday mornings, forecasters said.
A wind advisory was issued by the NWS from 5 p.m. Monday to 5 a.m. Tuesday for San Diego County deserts and mountains.
Along the coast Tuesday, it was expected to be partly cloudy in San Diego County with high temperatures from 68 to 72 degrees and 74 inland, the NWS said. The valleys were expected to be mostly sunny with highs from 74 to 78 and 79 to 84 near the foothills. It will be mostly sunny in the mountains with highs from 77 to 87. The deserts were expected to be mostly sunny with highs from 102 to 107.
Developing high pressure over California may bring warming for later in the week through next weekend, especially for inland areas, with increasing heat risk in the deserts, forecasters said.
West to northwest winds with gusts to around 20 knots were forecast for the outer coastal waters each afternoon and evening through Wednesday.
City News Service contributed to this article.
