The inner valleys of San Diego County could see some frost Saturday night and Sunday morning when temperatures drop to the 30s, the National Weather Service said.
The weather service issued a frost warning from midnight Saturday to noon. 9 Sunday for county deserts and valleys.
Surface high pressure that settled over the large basin was predicted to help with the development of Santa Ana winds Saturday morning, which persist until Sunday morning.
A warning of beach hazards was issued from Saturday to Monday morning. Elevated surf was expected Saturday morning with surfing at 4 to 6 feet with sets to 7 feet, decreasing Saturday night. High to 7 to 7.5 feet were predicted every morning through Monday.
Morning high tides can result in minor tidal overflows, bringing some seawater accumulation to low-lying areas. NWS suggested staying out of the water to avoid dangerous swimming conditions.
High temperatures along the coast on Saturday were forecast to be around 62 degrees with night temperatures of 36-42 degrees. Highlights in the western valley will be around 62 and 53-58 close to the foot with 33-40 degrees overnight. Mountain heights were expected to be 44-51, with 24-32 highs overnight. Highlights in the deserts will be 58-63 with lowest levels of 32-40 overnight.
Returning shore power was forecast to return to spotty low clouds and fog inland late Monday or Tuesday, which helped moderate the night’s low temperatures, but warmer days were expected to last until Wednesday, the weather service said.
The next chance of precipitation may come as early as next weekend as the upper lows again develop near the west coast.
– City News Service