The National Weather Service office in San Diego is forecasting the first summer heat wave for the end of this week, with inland temperatures 5 to 10 degrees above normal.
“High pressure will build across the southwestern United States … bringing a pronounced warm-up for all areas,” the weather service said. “High temperatures will be above average Friday through Sunday and the marine layer will turn shallower.”
High temperatures on Wednesday will be 69 to 74 at the beaches and 76 to 81 inland, but by Saturday will rise to 74 to 79 at the beaches and 85 inland.
East County areas will see highs ranging from 79 to 84 in the valleys and 84 to 89 near the foothills on Wednesday, increasing to 86 to 91 in the valleys and 92 to 97 near the foothills on Saturday.
Highs in the deserts will be 100 to 115 on Saturday.
It won’t be hot enough for the weather service to issue heat advisories or warnings, but it will be close.
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