High temperatures warming to around average for today and Friday, then cooler for the weekend with southwest to west winds for the mountains and deserts gusting to 40 to 50 mph with isolated gusts to 65 mph. There is also a chance of showers for Saturday through early Sunday with the most likely time for showers on Saturday night. Warmer and dry with weaker winds for Monday, then another chance of showers around the middle of next week.
For extreme southwestern California including Orange, San Diego, western Riverside and southwestern San Bernardino counties,
(today through Saturday), A low pressure system off the California coast will move inland through central and southern California during the weekend. This will strengthen the onshore flow and bring cooling, stronger southwest to west winds for the mountains and deserts, and a chance of showers from the coastal water to the mountains.
High temperatures for inland areas will warm 5 to 10 degrees today with high temperatures around average for the mountains and deserts and a few degrees above average for the coast and valleys. High temperatures for today will range from around 70 near the coast to the mid 70s to lower 80s for the Inland Empire with the lower deserts in the upper 80s. Friday will be slightly cooler for the coast to the mountains and slightly warmer for the deserts.
High temperatures on Saturday will be a few degrees cooler near the coast to 8 to 12 degrees cooler for inland areas with high temperatures as much as 10 to 15 degrees below average for the mountains. High temperatures on Saturday for the coast and valleys will be mostly in the 60s with the lower deserts in the upper 70s to mid 80s.
Southwest to west winds will gust to 30 to 40 mph during the afternoon and evening for today and Friday, then strengthen to 40 to 50 mph for the weekend with isolated gusts to 65 mph. There could be some lighter precipitation at times during the day on Saturday from the coast to the mountains.
(Saturday night through Wednesday), A low pressure system moving inland through central and southern California during the weekend will bring a chance of showers for Saturday through early Sunday with the most likely time for precipitation Saturday night with rainfall from the coast to the mountains ranging from less than one-tenth inch to around one- quarter inch.
Not much changes in winds and high temperatures is expected for Sunday, then dry on Monday with weaker winds and with high temperatures 5 to 10 degrees warmer for inland areas. Toward the middle of next week, another low pressure system could bring a chance of precipitation.
230930z, Coast/Valleys, SCT-BKN low clouds mainly in San Diego County will continue variable and intermittent coverage through 15Z. Bases will be around 2200-3500 feet MSL. Patchy low clouds will struggle to reform tonight after 06Z with 30% chance of cigs over coastal airports.
Mountains/Deserts, West winds gusting 25-35 kts through passes and along desert slopes will continue to diminish through 16Z. Local up/downdrafts in lee of mountains.
Otherwise, SCT high clouds today and tonight.
No hazardous marine conditions are expected through Monday, though brisk westerly winds to 20 kts are expected late Friday and late Saturday.
Ca, None. PZ, None.
