Weather fluctuations continue to color the daily routines of Bay Area residents, with this Tuesday offering a brief respite from recent showers. According to the National Weather Service San Francisco, while today promises to be the driest day of the week, a much drier airmass is moving in and contributing to cooler morning temperatures across the region. After the North Bay received slightly higher rain totals, ranging from 0.1"-0.18", even San Jose recorded its rainiest day since May, a minimal but notable 0.01" of rain at the San Jose International Airport.
As clouds scatter and allow the sun full domain, the current temperature in the upper 40s to low 50s is expected to dip into the upper 30s to low 40s this morning, especially in the North Bay, where the phenomenon of cloud cover acting as "insulation" seems to be missing, leading to increased radiational cooling. With the northwesterly winds acting as the region's chill factor today, the National Weather Service advises layering up with a "sturdier jacket" for the day's errands. While daytime temperatures may uptick 1 to 3 degrees compared to yesterday, the anticipated gusty northwest winds may make the actual feel of the temperature outside cooler than it is.
Looking forward to the remainder of the week, upper-level troughs are projected to bring more precipitation to the Bay Area. Beginning Wednesday afternoon, rain chances increase and will continue into the weekend, with the highest totals again favored in the North Bay. "Rain chances increase Wednesday afternoon across the North Bay and gradually increase across the rest of the Bay Area and the Central Coast Wednesday evening into Thursday morning," says the National Weather Service forecast. The projected rain could lead to a "spooky ambiance" for those out on Thursday evening, with showers tapering off by late Thursday morning.
By the weekend, however, dry conditions are on the horizon, and there is potential for elevated fire weather concerns, largely due to offshore (northeasterly) winds, though this remains uncertain. The National Weather Service points out the ensemble, and CPC guidance hints at returning to warmer, drier circumstances in early November. For mariners, the same report anticipates a Small Craft Advisory effective from Tuesday afternoon until the evening for parts of the Monterey Bay due to the expected increase in winds, leading to rougher seas later in the week as another cold front moves through.
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