It was another hot day across Kern County, but a few more clouds were apparent in the sky. Low pressure southwest of San Diego is destined to move northeast and spread even more clouds through the next 48 hours. The disturbance is expected to bring slightly cooler temperatures but slightly higher humidities through Thursday. A chance for mostly light showers will develop by Wednesday late night into the early hours of Thursday morning. With the low pressure system forecast to be overhead by Thursday, I am now including a chance for isolated thunderstorms. Rainfall totals in the south valley from midnight Wednesday night through Thursday evening should range between a trace and about a quarter inch. In the mountains, during that same period, I'm predicting between a tenth and a half inch. The higher amounts would come in the vicinity of any isolated thunderstorms that form during the afternoon on Thursday.
By Friday the weather feature will have mostly moved east, although I am holding a lingering 30% chance for morning showers in the Tehachapi mountains before afternoon clearing. Temperatures are expected to be down into the mid 80s for Thursday through Saturday. Another weather system will push into the state from the west very late Saturday night. From the late evening hours on Saturday through Sunday morning I believe we could see a few more showers from the fast moving cold front.
Temperatures will be the coolest of this period Sunday and Monday with highs in the upper 70s to low 80s on Sunday and Monday. Overnight lows should slip into the upper 50s. Next week will be dry and gradually warmer as upper level high pressure expands over our region. The next big change is now set for the end of next week with another cold front and low pressure zone coming to our state. It will warm up to nearly 90° the middle of next week, but a few computer models are showing a trend toward cooler and wetter weather by the following weekend.
We can only hope and see if the various model guidance comes into agreement for this change late in the 10-day forecast period.
10-13-15 6:25 pm Chief Meteorologist MILES MUZIO