Big Warming Trend Coming
Our great weather for the end of September was enjoyed by all with daytime highs in the mid 80s under gloriously sunny skies. But October beckons and may present a surprise- much warmer temperatures. A surface high pressure zone is quickly moving into the Great Basin and will produce an offshore flow over all of California beginning tomorrow and persisting through early in the weekend. Temperatures in the 80s today will skyrocket into the 90s for many parts of the state by Friday and Saturday.
A Santa Ana wind will set up for extreme fire danger in the Southland and temperatures there close to 100°. In the south valley, haze will begin to predominate under a large ridge of upper level high pressure. Still, readings should rise well into the 90s beginning Thursday. Mountain and desert temperatures will also peak well above normal, with mid 80s in the mountains and mid to upper 90s from the desert to the Lake Isabella area. That big ridge begins to break down by the middle of next week, and temperatures will follow- dropping into the mid 80s for highs. All along, it will be pleasant cool each night and in the early morning.
Air quality issues may arise late this week and weekend in the San Joaquin Valley.