Marine layer will keep the coast cool Thursday while inland valleys stay hot

Posted at 4:57 AM, May 28, 2020
and last updated 2020-05-28 09:19:52-04

Marine layer was stubborn to clear for Central Coast beaches Wednesday and it's likely there will be a similar trend for Thursday. Onshore flow should keep most of the beaches socked in through the morning and afternoon hours, which will result in cooler daytime highs between the low to upper 60s.

Weather models show the fog lingering along the coast for the beaches Thursday, but most of the fog will mix out of the coastal valley areas by late morning. Temperatures in the valleys will range from the low to upper 70s Thursday and will continue to cool through the weekend.

Thursday is the last day of a heat advisory for the inland valleys in San Luis Obispo County. The heat advisory will expire at 7:00 p.m. but until then, daytime highs across the interiors could range from 92 degrees to 104 degrees. On Wednesday, National Weather Service reported a record breaking temperature of 106 degrees in Paso Robles. San Miguel and Shandon also reached 106 degrees Wednesday. Triple-digit heat is still in the forecast for these locations Thursday, but by the weekend there will be a 20-degree decrease in temperatures for the inland valleys as low pressure develops over the region.

There's still a chance of light rain showers late Friday night through early Saturday morning.