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San Diego's Weather Forecast for June 19, 2024: Subtle changes before excessive heat this weekend

Posted at 11:53 AM, Jun 18, 2024

Pockets of dense fog are blanketing our most populated neighborhoods this morning, and we're waking up mildly across the coast and inland valleys in the low 60s.

Low clouds will eventually mix out, creating a pleasant afternoon for the inland communities. An area of low pressure to our north will continue to enhance the marine layer and onshore flow for the next few days. Winds will gradually build tonight across the mountain slopes and deserts with isolated gusts up to 45mph.

As we say adios to spring and hello to the summer solstice on Thursday at 1:50 P.M., widespread and excessive heat will blanket the county this weekend.

The heat dome over the eastern half of the country will sweep west, ushering in warm conditions, especially for the interior part of the county. By Saturday, temperatures will soar 10-13 degrees and up to 10 degrees above our 30-year normal. Daytime highs will climb into the mid-70s across the coast and the upper 80s and low 90s inland, with excessive heat near 115 in the deserts.

The area of high pressure will sit comfortably over the southwest for several days, potentially picking up some precipitable moisture from the Gulf of Mexico, resulting in our first surge of monsoon weather.

Wednesday's Highs:
Coast: 68-76°
Inland: 75-86°
Mountains: 80-90°
Deserts: 102-105°

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