Temperatures in San Jose reached a high of 73 degrees on Tuesday, eclipsing the previous Nov. 30 record of 72 degrees in 2008.
Unseasonably warm weather is expected to continue into Wednesday in the Bay Area, with possible record-breaking temperatures in San Francisco, which had a Dec. 1 high of 70 degrees in 1959 and Oakland, which reached 71 degrees in 2014.
“We have very strong high pressure that’s set up over the area that’s kept us pretty warm the past couple of days,” said National Weather Service meteorologist Gerry Diaz. “It will be the strongest today and we’ll expect the warm, dry air to mix down to the lower levels and snake down into the Bay and the foothills. Areas that would normally be shielded by the marine layer will be at the mercy of the high pressure.”
Temperatures are expected to reach the 70s along the Bay shorelines with other localized areas seeing highs in the upper 70s and 80s. It will be the warmest in the North Bay mountains and East Bay hills.
Also on the forecast for Wednesday are 10 to 15 miles per hour winds in portions of the Salinas Valley and strong winds along the Oakland, Berkeley and North Bay foothills, with gusts ranging from 30 to 35 miles per hour in the morning.
Diaz said that the weather service will be keeping a close eye on San Francisco, Oakland and San Jose, where temperature records could be broken for the first time in nearly 100 years. It’s expected to range around 73 degrees in the South Bay so Diaz said there’s a “good chance” that the previous record of 72 degrees in 1927 could be shattered.
“We just need warm air to mix down at the right time of day to break that record,” Diaz said. “We’ll see how that plays out in the next few hours.”
Clear, sunny skies and temperatures in the 70s and 80s — usually more emblematic of a typical summer day in the Bay Area — have persisted over the past couple of days. The warm spell also means no drop of rain in sight.
“Normally when we get these offshore wind events, we’re talking about wildfire concerns, dry air and prominent fuel for fires, but because of the rain in October, we’re doing pretty well right now,” Diaz said. “We’re going down to our regular conditions for this time of year, but all we need is a little bit of rain to bring the concerns down.”
There’s a slight chance for rain during the middle of December but Diaz said it’s still too early to tell.
“Nothing is really set in stone,” he said.
By this weekend, the weather is expected to cool down and “go back to normal” for early December, with temperatures ranging in the 60s for most of the Bay Area and the low 70s in more inland areas.
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