Sunrise Heat: The Bay Area’s Climate Rollercoaster

The cool mist that settled over the Bay after a blistering March has lingered, turning cold breezes and light rain into everyday weather. Yet this chill is fading fast as a pressure ridge heads inland, signaling the return of heat. The official summer start on Sunday will bring temperatures up, though not as extreme as last week’s peak. Mid‑ to late next week should see the warmest days, with some spots reaching the high 80s and maybe 90 degrees. Coastal areas will stay milder, topping out in the 60s. In the coming weekend, inland East Bay and Santa Clara Valley will enjoy pleasant highs of 70 to 75 degrees on Saturday, with a modest 5‑8 degree jump Sunday. Earlier this month, the region experienced scorching conditions, with many areas hitting 90s and some even over 100. That heat was cut short when a low‑pressure system from the Gulf of Alaska rolled in, thickening the marine layer. The result was morning drizzle that spread far inland—an unusual pattern for summer storms.The low‑pressure system is moving eastward, and forecasters see the ridge pattern settling by Tuesday. Meanwhile, powerful waves continue to shape the coastline, prompting a beach hazards alert that now extends through Sunday morning. The original warning, which ended Thursday, may stay active longer than expected. These shifts show how quickly the Bay Area’s weather can change, turning a cool day into a warm one in just hours. Residents should stay prepared for both the lingering chill and the coming heat, especially as coastal waters remain rough.