, Issued at 1218 AM PDT Tue May 5 2026 (today and tonight)
Rain totals over the North Bay have so far varied from 0.10" to as much as 0.50". Steady light to moderate rain will continue to move southward across the rest of the Bay Area through morning, likely affecting the morning commute with wet roads. A few areas of light drizzle and/or light rain may reach the north Central Coast. Isolated instability did produce a couple thunderstorms Monday evening. One thunderstorm developed over the coastal waters southwest of Point Arena and another over far northern Napa County. The 500 mb low pressure system is beginning to pick up speed and will move eastward while caught up in the subtropical jet stream. The rain diminishes later in the morning with drier conditions returning, however it may take some time for the Sun to break through the clouds later today. Highs today are forecast to reach the 60s.
Cloudy with patchy fog tonight with temperatures lowering to the 50s and 40s.
..issued at 1218 AM PDT Tue May 5 2026 (Wednesday through Monday)
There's good global model agreement that a high pressure system will move in across the forecast area during this timeframe. Expect dry weather along with a warming trend from mid to late week and the weekend. Compressional warming aloft and surface warming will result in above to well above normal high temperatures by late in the week and weekend. Far inland locations will reach the 80s and 90s. Moderate HeatRisk likely develops over inland locations by Sunday. Please stay tuned to the latest updates.
(12z TAFS) Issued at 438 AM PDT Tue May 5 2026
Light rain is tapering off and has been removed from the 12Z TAFs through a few light showers are still possible in the early morning. Widespread VFR ceilings will gradually trend lower over the next few hours before the coverage breaks up later in the day. Residual moisture will bring a good chance for MVFR or IFR ceilings Tuesday night through Wednesday morning.
Vicinity of SFO, VFR ceilings are slowly lowering and will likely reach MVFR through the mid morning. The clouds bases should lift and will likely scatter out this afternoon before returning overnight. Otherwise moderate onshore winds will persist through the TAF period.
SFO Bridge Approach, Similar to SFO.
Monterey Bay Terminals, The southern terminals avoided the rain overnight, and the ceilings stayed higher. There is still a good chance for MVFR impacts this morning before some improvement in the afternoon.
(today through Sunday) Issued at 438 AM PDT Tue May 5 2026
The gradient between high pressure over the Eastern Pacific and lower pressure over the western US will support a gentle NW breeze and moderate seas through Wednesday. This gradient will gradually tighten from Thursday through Saturday, causing winds to increase to a strong breeze and building rough seas this weekend.
Ca, None. PZ, None.
