Cool weekend is expected in San Diego County, with possible frost

Frost on a lawn. Photo via Wikimedia Commons

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.

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