A heat wave that pushed temperatures to triple-digits in some places of the Bay Area will show slight signs of cooling off Sunday and Monday, but not enough to feel any significant difference, a National Weather Service forecaster said.
The noticeable relief likely won't be felt until Tuesday, forecaster Diane Henderson said, when a high pressure system that has hung around the Bay Area begins to dissipate, she said.
The 100-degree heat felt in Livermore was the high spot throughout the Bay Area on Saturday, forecaster Diane Henderson said Sunday morning. Temperatures in most other inland Bay Area cities hovered in the mid- to high-90s on Saturday and were, on average, anywhere from 5 to 8 degrees above normal, according to weather.com. San Francisco with a high of 88 degrees, was 18 degrees above normal, while San Jose's high temperature of 94 degrees was 13 degrees above average.
Still, temperatures would have to spike several more degrees to threaten any records, and that is not going to happen, Henderson said. Instead, the temperatures are expected to be 1 to 2 degrees cooler on average today, and then a couple of degrees cooler on Monday before a more significant dip is felt on Tuesday, she said.
Henderson said an upper level high pressure ridge has covered the region, creating air to be compressed, air to flow in from the mountains and desert and temperatures to rise.
But as that ridge gradually moves away, it will be filled by cooler air, and temperatures are expected to be in the 70s and low 80s throughout the Bay Area on Tuesday, she said. Temperatures will continue to range in the 50s and 60s at night, she said.
Despite the temperatures, the Bay Area Air Quality Management District did not issue a Spare the Air alert on Sunday.
Contact Rick Hurd at 925-945-4789 and follow him at Twitter.com/3rdERH.