Temperatures will remain well above average this week. High temperatures for inland areas will remain around 15 to 20 degrees above average with some record daily temperatures for heat continuing to be tied or broken, mainly for the mountains and deserts but occasionally for the inland valleys as well. Night and morning coastal low clouds spreading into the far western valleys at times. Cooling will spread inland for the weekend into early next week, but with high temperatures for next Tuesday still around 5 to 10 degrees above average.
For extreme southwestern California including Orange, San Diego, western Riverside and southwestern San Bernardino counties,
Mostly clear this afternoon, although there are a few high clouds and some marine layer low clouds still linger at the beaches while a coastal eddy continues. Temperatures are mostly within a few degrees of where they were at this time yesterday.
Daytime temperatures will continue to be well above seasonal averages into next weekend as an upper ridge persists over the region. An upper level low currently off the Baja coast will move over SoCal Wed/Thu but will have little effect on our weather. High temperatures today will range from around 5 degrees above average near the coast to around 20 degrees above average in the mountains and high desert. High temperatures today will range from around 70 near the coast to the mid 80s to lower 90s for the Inland Empire with the lower deserts in the 90s. With gradual warming, high temperatures on Thursday will range from around 10 degrees above average near the coast to 15 to 20 degrees above average for mountains, valleys, and deserts. Marine layer low clouds and fog will spread inland again tonight and Wednesday night but likely won't reach as far inland as last night as the marine layer will be a little shallower. A coastal eddy is likely to continue at least into Thursday and will help to maintain the marine layer presence.
A noticeable cooling trend will begin Sunday and continue into next Tuesday as the upper high pressure ridge gets displaced to the southeast by a low pressure trough moving in from the northwest. The marine layer clouds and fog will spread progressively farther inland each night and morning. Next Tuesday, high temperatures will generally be less than 10 degrees above seasonal averages in all areas. Temps will be in the upper 60s to mid 70s near the coast, the mid to upper 70s in the inland valleys, the 70s in the high deserts, the 50s and 60s in the mtns and the mid 80s to low 90s in the low deserts.
241800z, Low clouds based 600-1000 feet MSL have mostly cleared to the beaches this morning, but patchy and intermittent low clouds could linger along immediate coast over the day. Low clouds with similar to slightly lower bases increase and spread inland to similar extent to this morning after 02Z. Vis reduced 0-5SM mainly over higher coastal terrain and valleys. Low clouds clearing 16-18Z Wed morning.
Otherwise, mostly clear and VFR conditions will prevail today and tonight.
No hazardous marine conditions expected through Saturday.
Ca, None. PZ, None.
