The weather in much of the Southwest has finally felt like the Holiday Season the last few days. Temperatures have been at, or even below, normal and there was some much needed rain as well. As we go through the last two days of this long Holiday weekend its now the time for a warming trend. A building ridge of high pressure now in the Eastern Pacific moves to California later Saturday and Saturday night and stays parked there on Sunday. This will cause a nice increase in temperatures, aided in Southwest California by a developing light to moderate Santa Ana wind. It will not be as warm as previous warm-up when it got well into the 80s to low 90s. But temperatures will certainly be above normal.
Here are some examples of what it was today and what it will be like going through the weekend with regards to high temperatures.
One exception to this warm-up will be in the Central Valley of California. Moisture trapped in the low levels has already produced a rather large area of cloudiness that did not go away Friday. Clouds will lower Friday night and Saturday morning and there will be areas of dense fog form as well. The upper level high building in Saturday will make the air mass even more stable and probably at best allow for partial afternoon clearing with some places having clouds all day. Sunday will as well start with low clouds and fog with perhaps a bit better clearing. Cool air is also trapped in the Valley and high temperatures will remain only around 60 for both days of the weekend.
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