October is going to come in hot over much of Southern California. The National Weather Service in Oxnard has put out a special weather statement and declared a red flag alert in inland areas of Los Angeles County. The LAFD has not gone to red flag status for hillsides and canyons of Los Angeles.
Record high temperatures are likely across the area Monday. High pressure will continue to build over the Great Basin through Monday. And dry offshore winds will warm temperatures to 100 to 108 in the valleys and to the 90s along the coast. Downtown Los Angeles will likely reach 100 degrees Monday afternoon.
The offshore winds will diminish Monday night though a strong area of high pressure will
persist over the area through the week and temperatures will likely continue 10 to 15 degrees above normal a short distance away from the coast. Onshore winds will likely moderate the coastal temperatures where the central coast will cool several degrees below
normal by Wednesday and the Ventura and Los Angeles coasts will cool below normal by Friday.
A red flag warning is in effect for Monday through Tuesday for the Ventura and Los Angeles County mountains as well as for Santa Clarita Valley. Critical fire weather conditions will develop early Monday morning as offshore winds combine with widespread single digit humidities and record low vegetation moisture. The critical fire weather conditions will moderate somewhat Monday as weaker offshore winds are expected....But the danger will likely remain high as the onshore winds develop and increase before the humidity can recover early Tuesday afternoon.