Increasing clouds and patchy fog will be the start to Tuesday morning. This is due to an area of low pressure moving into Southern California. Due to this system temps will cool significantly until Friday. Daytime highs along the coast in the upper 60s to low 70s with valleys in the mid to upper 70s.
A chance for rain showers can be expected for Tuesday night until Thursday. Rain totals will not be significant with Ventura County looking at about a quarter inch of rain and Santa Barbara County to the Central Coast viewing less than a tenth of an inch.
Less clouds could be expected for the weekend as a ridge of high pressure forms for California. Conditions will be relatively dry with more sunshine.