For the Bay Area, it’s been a July to chill. Why has it happened and does it mean anything?

A cold breeze that blew about mph hit the Bay Area coastline Monday then carried through the hills into the East Bay and on down to the South Bay Heavy clouds covered much of the region in gray Morning drizzle that bordered on rain accompanied the coastal fog as it swept through at sunrise It all seemed better like weather better suited for early to mid-March or perhaps the later part of November But July Yeah and it s pretty much going to stay like this National Weather Function meteorologist Dalton Behringer reported before joking We ll see the sun in August It would be a switch Save for a handful of brief two- and three-day heat-ups the Bay Area summer has been mild and marked more by cool cloudy weather than the very-warm-and-clear forecast so a great number of have gotten used to in new years I m not complaining Ray Miller commented as he pumped gas at a Bay Point gas station We could be almost anywhere else and it d be like last year Indeed as a gigantic heat dome prepares to leave the bulk of the United States sizzling this week the Bay Area will be ushering in weather that may bring out hoodies and long pants not shorts and t-shirts The highest temperature expected in the region this week is degrees in Brentwood I feel it s just been like perfect perfect weather not too hot not too cold It s just perfect Carla Arroyo of Gilroy announced while at the Municipal Rose Garden in San Jose When it s too hot we don t do the outdoor stuff The moderate weather has been caused by global circulation weather expert Jan Null mentioned adding that the high-pressure ridges that take hot air north and the lower-pressure troughs that move cold air south have become positioned at different latitude and longitude points on the globe and become in balance Null announced that balance can create a long-standing weather pattern such as the one that has kept mild Bay Area weather mostly in place since Memorial Day This year s pattern stand in stark contrast to last year the Bay Area sizzled in July starting with the very outset of the month and not letting up until the end Last July Brentwood reached at least degrees times according AccuWeather while Concord got there times and Walnut Creek five Each of those five cities had at least three days that reached In Alameda County Livermore and Pleasanton generally considered the hottest spots in that county exceeded degrees and and six times respectively Morgan Hill one of the hottest places in Santa Clara County reached triple-digits seven times last July and San Jose got there twice This year all of those cities have combined to get to degrees two times Concord once and Livermore once I certainly love the temperate weather Lisa Shedd of Walnut Creek revealed I m not a fan of the really hot I don t know if it means something bad or it it means something good so I don t really know what it means But I know I m enjoying it What it means may not be a signifier of longer-term trends Null disclosed The five-decades-long Bay Area meteorologist and founder of Golden Gate Weather Services disclosed it s merely nature at its usual If we were to average last year s high temperatures with what we end up having this year Null announced It will allegedly be close to what an average July temperature is Still last July was part of a year that was the hottest globally since weather records began in according to the National Oceanic and Atmospheric Administration the parent agency of the NWS So perhaps more telling is why the temperature has trended down since Memorial Day the traditional unofficial start of summer That has to do with the location of the high-pressure domes and low-pressure troughs with relation to longitude and latitude on the Earth s globe according to weather experts Normally the ridge sets up closer to our coast and so everything flows in a way that the high-pressure dome is usually right over us Behringer declared Once that dome expands the marine layer compresses we stop getting breezes any wind blows the other direction and it gets very hot We know the drill This year that ridge is set up more toward the Aleutian Islands an island chain off Alaska Thus the marine layer has stayed thick the natural coolness of breezes coming in from cold places on the Pacific Ocean has kept the region from baking he disclosed Now how long will things stay in balance and the weather stay this way That s still any forecaster s guess Things get out of equilibrium and things start moving Null revealed It can be a butterfly in Japan Staff writer Caelyn Pender contributed to this story