San Jose woke up under patchy fog this morning, with many low-lying neighborhoods seeing readings in the mid-40s. The morning marine layer is expected to thin by mid-morning, leaving mostly sunny skies and a high near 68°F this afternoon. The mild break will not last, as forecasters are watching a Pacific storm expected to bring the heaviest rain Tuesday night into Wednesday.
Foggy Mornings, Sunny Afternoons
Areas of fog are most likely before 9 AM, especially in valleys and along low elevation corridors, but sunshine should mix out the low clouds by late morning. Northwest winds will stay on the light side, generally 1 to 9 mph, and afternoon temperatures will ease back into the mid-60s. If you are heading out early, it is a good idea to flip on the headlights to improve visibility during the commute.
Rain Likely Tuesday Night Into Wednesday
Forecasts now favor a wetter midweek system, with rain likely starting Tuesday and the heaviest showers arriving Tuesday night into Wednesday, according to the National Weather Service. Coastal areas could pick up roughly a half inch or more, while inland spots are more likely to see a few tenths of an inch, and some higher coastal slopes may get closer to an inch. There is also a small chance of isolated thunder on Tuesday night as the system moves through.
Boaters and Commuters
Boaters should note that Small Craft Advisories are in effect for portions of the central coast through Monday morning, and can expect choppy seas and gusty winds offshore. For drivers, the combination of morning fog and midweek rain means allowing extra time on the roads and watching for slick spots during the Tuesday night commute. Keep an umbrella or rain jacket handy if you have plans later in the week.
Local Context
The Bay Area has been swinging between patchy fog and mild afternoons recently, and we covered the early February warmup and morning fog in a recent story. We will update this forecast if watches or warnings change, and you can check the National Weather Service for the latest.
