Drizzle is possible for our Thursday forecast. Temperatures will be staying cool for the rest of this work week and there is a slight chance for rain late Sunday into Monday.
A cooler air mass will remain in place through Thursday as strong onshore flow and a deep marine layer will combine to bring extensive low clouds. Clouds will struggle to clear from the coast and valleys each day. Drizzle or light rain is possible at times through Thursday. High pressure aloft will bring a slight warming trend for the end of the week, then a storm system could bring rain and mountain snow later Sunday into Monday.
A second upper low is rapidly approaching form the north and will bring additional cold air aloft tonight into Thursday. This will bring solid cloud cover and a chance of drizzle. Thursday temperatures will be chilly and below average in the mid 50s to mid 60s for highs and 40s overnight.
Friday and Saturday a weak upper ridge develops between weather system. We will still have a strong onshore flow in place puling in that cold ocean air, and that warming aloft from the ridge will actually help solidify the marine layer. We could be looking at low clouds lingering at the beaches much of the day. Warming should only be a degree or two.
A late season trough will hit the west coast Sunday into Monday. This brings us a chance of showers or light rain starting Sunday and wrapping up Monday. Chances are still small at this point, but we will continue to update you on-air and online as we get closer. Temperatures will stay cool and below average during this period.
Expecting more sunshine and warmer temperatures starting on Tuesday.