An early-season heat wave impacting California this week has already set records in the Bay Area.
San Francisco International Airport reached 83 degrees Monday, breaking the previous daily record of 82. Redwood City hit 89, breaking the previous daily record of 84. Oakland Museum reached 86 degrees, surpassing the previous record of 85. The previous daily records were all set in 2004.
San Jose Mineta International Airport reached 85 degrees Monday, tying a daily record set over a century ago, in 1914.
And that was just at official climate stations. Measurements in some San Francisco neighborhoods — including Buena Vista and Glen Park — reached 90 degrees, according to data provided by the National Weather Service.
Elsewhere in the state, conditions were just as unseasonably warm Monday. Temperatures in Truckee topped 70 degrees, which is more typical of early June, said Chronicle meteorologist Anthony Edwards.
In Southern California, Riverside reached 95, breaking the previous record of 94, set in 2007. That location’s period of record stretches back to 1893. Ramona, Alpine and El Cajon — all in San Diego County — also set daily temperature records, reaching 89, 90 and 93, respectively.
Additional record-breaking heat is expected across the state this week, courtesy of a large, persistent ridge of high pressure that’s settled above the western U.S.
“This is a summerlike ridge occurring in March,” said UC Agriculture and Natural Resources climate scientist Daniel Swain, during an online briefing Monday. “It’s really genuinely shocking.”
A Bay Area heat advisory remains in effect until 8 p.m. Friday, The weather service forecasts high temperatures in the low to mid-90s forecast across the interior and 80s along the coastline. These kinds of temperatures can most affect individuals sensitive to heat, especially those without effective cooling or adequate hydration, according to the report.
The heat advisory is the first ever issued by the weather service for the Bay Area in March. The forecast calls for temperatures 20 to 30 degrees above normal for this time of year.
Temperatures are even more extreme in Southern California. There, extreme heat warnings are in effect later this week due to a high risk of dangerous heat illness. High temperatures in some locations have the potential to set monthly records, according to the weather service.