The Bay Area weather forecast, as provided by the National Weather Service San Francisco, suggests an upcoming change in conditions with a cold front poised to usher in light rain to the North Bay by Wednesday, coupled with more widespread gusty winds from Wednesday through Thursday. According to the National Weather Service at 12:10 AM PST Tuesday, the anticipated shift will be followed by a warming trend, with temperatures expected to hike 5-10 degrees above normal as we head into the weekend.

For today and tonight, the forecast is for "quiet weather" with a gentle increase in clouds and milquetoast winds, coupled with mild temperatures. A 500 mb short wave ridge building throughout the morning is predicted to not significantly warm the surface due to the approaching front's cloud cover, and "afternoon temperatures are only expected to reach the upper 50s to mid 60s, which is pretty typical for this time of year," as the National Weather Service San Francisco detailed.

Looking ahead from Wednesday through Monday, the cold front, associated with a 997 mb low-pressure system off Oregon's coast, is expected to move quickly, allowing high pressure to build behind it. This transition should bring about a period of clearer skies by Wednesday evening, along with a couple of days of gusty northerly winds. A warming trend is anticipated later in the week, particularly to the south of San Francisco, bringing warmer temperatures forecast to persist into the early half of the next week. However, forecasters at the National Weather Service San Francisco advise caution beyond next Wednesday because "ensemble guidance gets pretty split in the extended range".

Aviation conditions for the Bay Area are expected to remain in the VFR-MVFR range, with a few pockets of morning low clouds and a growing probability of light rain by Wednesday morning. The National Weather Service San Francisco's aviation forecast outlines a general west wind of 5 to 10 knots for the vicinity of SFO, with southeast winds shifting onshore at Monterey Bay terminals in the afternoon.

Marine conditions will see moderate northwesterly winds and moderate to rough seas through the morning, particularly along the Big Sur coast. A moderate northwest swell is set to persist during the latter half of the week. A small craft advisory is in effect for various coastal regions, indicating that mariners should exercise caution.