We've been warm in the interior all week. We will transition to much cooler inland temps Saturday. For Paso Robles Thursday and Friday look to top 100 but Saturday may only be in the lower to middle 80s. The reason for this is an approaching trough of low pressure. As that trough arrives it will drive stronger winds.
Those winds will be out of the north Friday. That should create a strong, warm and dry sundowner pattern for Santa Barbara county's Southcoast. Thursday's highs will be in the upper 80s but Friday's could be in the mid to upper 90s if the Sundowner develops as models indicate.
Outside of the Southcoast generally warm conditions continue away from the beaches for Thursday and Friday. At the beaches a thin cooling marine layer will keep most beaches in the 60s and lower 70s through Friday.
Winds look to be stronger Saturday and Sunday out of the NW, this will keep inland areas cooler through the weekend.
Next week temps will slowly rebound from the weekend but doesn't look like it returns to triple digits anytime soon.