November 28, 2021 – Cool mornings with local fog in the Valley and mild afternoons expected over the next week. Dry weather continues.
Discussion
A few high clouds are noted across far northern California early this morning as a weak system passes over the PacNW. As for interior Northern California, we will remain under Pacific high pressure through the week bringing relatively similar weather conditions each day.
Some locally reduced visibilities are already being realized across the northern San Joaquin Valley this morning where the potential for locally dense fog remains highest. Patchy Central Valley fog will be possible each morning through the week.
Upper high retreats slightly west Monday night into Tuesday as the PacNW system moves into the central US, which may lead to some locally breezy north to east winds Tuesday into Wednesday across the area.
High pressure then sets back up over northern California mid- week with a slight warm up projected for Wednesday, especially across the northern Sacramento Valley. Otherwise, afternoon highs and morning lows are a bit above average for this period.
Extended Discussion (Thursday through Sunday)
Cluster analysis shows strong ensemble agreement that high pressure will continue into next weekend over California. Forecast remains very similar to the short term with dry conditions and above normal temperatures prevailing.