SAN FRANCISCO (KRON) — A late-summer heat wave that’s currently developing over Southern California will be making its way north to us this week. Dangerous, record-breaking temperatures are expected across much of the Bay Area this weekend, according to the National Weather Service.

Tuesday is expected to be relatively mild before a warm-up begins Wednesday. The real hot temps will begin to hit Thursday the National Weather Service indicates. Temperatures will really ramp up as we head into the holiday weekend with triple digits expected in inland cities.

“September is traditionally a month where we have the potential to break heat records in the bay area and we are kicking off September with weather that lives up to the hype,” said KRON4 Meteorologist, Kyla Grogan. “Starting on Thursday inland temps will begin to rocket up, extreme inland spots could see triple digits Thursday and Friday.” 

How hot will it get?

It will be especially hot inland with Concord expected to hit 107 on Sunday and Livermore expected to hit 106 the same day. Santa Rosa could hit 104 Sunday and Cloverdale is also expected to reach 106.

“Inner East Bay will likely see the highest numbers Sunday into Monday and possibly Tuesday, some like Antioch, Concord and Livermore could exceed 105 degrees. The North Bay will likely also top out in the low 100s and in the South Bay triple digits are possible in Morgan Hill and points south.  Even San Francisco will see very unseasonable temps into the upper 70s,” said Grogan.

“The risk for heat related illnesses is increasing,” according to a tweet from the NWS Bay Area. “Make sure to hydrate and take cooling breaks if you’ll be outdoors. Avoid activities during the heat of the day if possible.”

Photo: NWS Bay Area

“Heat can be deadly,” warned KRON4 Meteorologist Kyla Grogan. Below are a few precautions you can take to avoid succumbing to the dangerous heat.

Tips for staying safe during the heat wave

  • Never leave your kids or pets in the car
  • Reapply sunscreen often
  • Drink plenty of water to avoid dehydration
  • Wear loose, light clothing
  • Minimize outdoor activities during the heat of the day
  • Stay in the shade or an air conditioned environment when possible

The sizzling temps are expected to last into next week before we see any kind of cooldown.

“By Saturday, the entire Bay Area is under an Excessive Heat Watch and it extends through Tuesday evening.  This type of prolonged heat can be exceptionally dangerous,” warns Grogan. “It’s important to curb outdoor activities that can be postponed, stay cool, stay hydrated and be heat safe. It’s also a great idea to check in on neighbors and friends like the young and elderly who might be sensitive to heat related illnesses.”

An excessive heat watch issued by the National Weather Service takes effect Thursday, Sept. 1 and will remain in effect through Tuesday, Sept. 6.