San Franciscans can expect a temperature dichotomy today with cool coastal areas juxtaposed against inland heat. While the beachgoers will be wrapping themselves in sweaters with highs lingering in the 60s, those residing east will bask in temperatures approaching a toasty 85 degrees. The disparity sharpens when considering the city's higher elevations, where the mercury could flirt with the mid-90s. According to NWS San Francisco, "Today will still be the warmest day of the forecast for most."
As night falls, those inland spots will experience a rapid cooldown, with temperatures sliding into the mid to low 50s, and maybe even the 40s in some secluded interior areas. The change in weather begins tonight with fog and drizzle, hinting at what NWS San Francisco calls "quite the pattern change." Soon, Wednesday will usher in a significant shift as a "big pivot in conditions" with onshore flows and increased cloudiness dropping temperatures across the board.
Drizzle touching upon the city will transform into full-fledged rain, particularly in the northern parts of the Bay Area, towards the latter half of the week. The anticipated rainfall seems to be a non-event overall, with the most precipitation expected in the mountainous regions of the Sonoma Coast. Predictions suggest a modest third of an inch from Thursday evening into early Saturday, whereas the SF Bay area might only see a tenth of an inch. "Drizzle chances will turn to light rain chances for the North Bay into Thursday," forecasts the NWS San Francisco.
Marine conditions will mimic the onshore shift with increasing winds and seas anticipated as the week progresses. Mariners should expect drizzles as they navigate through Wednesday and Thursday, transitioning into potential light rain towards the end of the week. "Winds and seas continue to increase in the mid week and again into the next work week," the NWS report advises for those venturing onto the waters.
