Weather 180: San Diego Goes From Clouds to Heat Wave This Week

Temps will soar into the 90s -- even at the coast

NBCUniversal Media, LLC

A heat wave will move into San Diego County this week, surging temperatures into the 90s -- even at the coast -- and elevating San Diego's fire risk when combined with Santa Ana wind conditions.

"We are going to see a big change in our weather pattern this week," NBC 7 Meteorologist Sheena Parveen said. "It is going to get hot around here."

Temperatures will gradually increase each day this week but are likely to break records during the hottest days -- Wednesday through Friday -- as a ridge of high pressure builds over California.

Temperatures will be 20 to 25 degrees above average for this time of year. Coastal areas can expect temperatures in the high-80s to low-90s, the valleys will see temps in the mid- to high-90s and the deserts will certainly surpass 100 degrees, according to forecasters.

A heat advisory will be in effect from 11 a.m. Wednesday to 6 p.m. Friday for coastal areas including Vista, Carlsbad, Encinitas, Chula Vista, National City, San Diego Escondido, El Cajon, San Marcos, La Mesa, Santee and Poway.

The heatwave will come with moderate Santa Ana winds on Wednesday and Thursday. Humidity will also drop to about 15% inland and 20% along the coast, according to the National Weather Service. The combination could create dangerous fire weather conditions.

Don't get used to the warm up, though. By the weekend, temperatures will mellow out as a Pacific trough moves inland -- and by next week there could be rain.

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