Dry weather with near-normal temperatures expected through the week with dry conditions prevailing. Breezy onshore winds at times.
Discussion
NorCal remains between high pressure centered over the lower Colorado river valley and an eastern Pacific trough. This is providing southwest flow that has shifted monsoon moisture eastward with dry conditions prevailing over the area. Trough will slowly move east over northern California through the week, as the high flattens.
Heights will briefly rise Tuesday ahead of trough allowing for above normal temperatures in the upper 90’s to low 100’s. Temperatures will drop to normal or below levels Wednesday and Thursday with trough passing through and onshore strengthening.
Surface and ridgetop south to southwest winds may also strengthen Wednesday afternoon into Thursday with approaching trough, which could cause some fire weather concerns.
Onshore flow today will keep temperatures near normal, except over the Delta, where readings will remain in the 80’s.
Extended Discussion (Friday through Monday)
Ensembles and clusters keep trough of some degree over NorCal through the extended period. This pattern will continue onshore flow, providing near-normal temperatures and dry conditions through the weekend.