Cal Fire officials say the hot, dry conditions are creating a dangerous environment across the region.
"Today's one of our hottest days, so we're concerned about starts," said Cal Fire Battalion Chief Michael Sacheli.
Although a Red Flag Warning for Sonoma County has expired, Sacheli says the risk of wildfire remains high due to dry vegetation, low humidity, and persistent heat.
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Fire crews are already dealing with one blaze. The Putah Fire in Yolo County has burned 860 acres, though crews report no homes or structures have been lost.
"We're fully staffed with all of our engines, aircraft, hand crews and dozers," Sacheli said.
In Santa Rosa, some residents are still choosing to stay active despite the heat. Pickleball players at local courts say adjusting their pace is key.
"If you can, play slow-you don't have to expend all that energy," said Eric Finkelstein.
Others emphasize hydration and awareness.
"Come early, drink lots of water. I put coconut water in mine. Pay attention to the heat because your heart gets racing," added Sheila Bell.
Nearby, the soaring temperatures are also creating opportunity. Sisters Ramona and Rigby Borton set up a lemonade stand to help people cool down, selling cold drinks for $2 a cup.
"There's a lot of hot, sweaty people looking to cool down," Ramona said.
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"We just felt doing a lemonade stand is a good way to make money, get experience selling things, and use our lemons."
Elsewhere in the North Bay, the heat was intense. In Petaluma, temperatures reached 101 degrees just after 1 p.m., with heat visibly rising off the pavement.
For many, the best escape was the water. At the Finley Aquatics Center in Santa Rosa, the pool offered much-needed relief.
"It's great - low 80s. You can get in, it doesn't hurt bad," said one swimmer when asked about the water.
Residents say they're grateful to have access to public cooling options during extreme weather.
"I feel fortunate to live in Santa Rosa where we have access to this. Kids are going to be having this for the summer - I'm grateful," said Donna Lucas.
Still, some admit there's one downside to cooling off in the pool.
"The hardest thing is going to be getting out of the pool," joked Terry Hannis.
With high temperatures expected to persist, fire officials are urging residents to remain cautious and do their part to prevent sparks during this period of elevated fire danger.
Beach hazard warnings along Bay Area coast as heat draws crowds
Beach hazard warnings along Bay Area coast as heat draws crowds
In the coast, beach hazard warnings were in effect along the coast as warm weather drew large crowds to Bay Area beaches.
In Pacifica, parking lots near the beachfront were full, with lines of cars waiting for spaces as visitors flocked to the coast to take advantage of the heat.
At Ocean Beach in San Francisco, people gathered to enjoy the sunshine.
Emily Mutchie, a San Francisco resident, said she welcomed the warm conditions.
"I love it. I love the sun and I feel like it's June right now. So it's like the perfect time for it to be weather like this," Mutchie said.
Marvin Ramos, also of San Francisco, noted the unusual timing.
"It's weird, only because, you know, we got the June blues. And so a day like this is really rare," Ramos said.
As crowds gathered, officials warned of dangerous ocean conditions, including cold water and unpredictable rip currents.
Recent incidents have underscored the risks. A surfer at Ocean Beach was found face down in the water and died of a heart attack weeks earlier. At Baker Beach, a fisherman was swept out to sea by sneaker waves and taken to the hospital. Lt. Mariano Elias of the San Francisco Fire Department said the conditions can quickly turn hazardous.
"We want people to be aware that although it's nice to come to the water to cool off and get in and swim, they can be deadly so we want people to just be careful while they're out here," Lt. Elias said.
Ocean Beach does not have lifeguards, but National Park Service ocean rescue personnel patrol the area. Lt. Elias urged beachgoers to remain vigilant, especially around the water.
"Always keep your eye on the water. Never turn your back to it and if you have young children, always keep a close eye on them to make sure they don't get pulled out into the ocean water," he said.
Safety officials also advise that anyone caught in a rip current should stay afloat, call for help and swim parallel to shore rather than fighting the current.
Lifeguards are on duty during the day at Stinson Beach, offering an additional layer of safety for those heading to the coast.