Cooler Changes Ahead

A small upper level system will pass by the Bay Area overnight bringing a mix of mid and high level clouds, and perhaps a sprinkle or two, even as low clouds spill inland thanks to a moderate onshore breeze. Expect spotty drizzle for the Monday AM commute turning to partly cloudy skies for the afternoon. Areas north of San Francisco may see more clouds as an area of low pressure drops down the NorCal coastline, spinning some showers just offshore. Depending on the eventual placement of this low, a few isolated showers could be possible, but as things look right now, the best odds will remain just to the west and north of us. Temps will trend a little cooler as clouds increase and the marine layer deepens out ahead of this system through Tuesday.