The Fourth of July will be cool, but firecracker- hot temperatures are expected to arrive afterwards in Southern California.
Record breaking heat is possible across the Southland, with temperatures ratcheting up both Thursday and Friday, according to forecasters at the National Weather Service in Oxnard.
Highs above 100 are forecast for most of Southern California, except for near the ocean, possibly as early as Thursday and as late as Sunday, forecasters said.
A strong high pressure is expected set up in the Four Corners region late in the week, and will push hot, dry desert air towards Los Angeles, forecasters said. This will combine with surface winds flowing from the north, and may support record heat for portions of the area.
Gusty north winds will scorch the mountains of Los Angeles and Ventura counties and will likely support elevated fire conditions for many areas Thursday through Sunday, forecasters said.
Critical fire weather conditions are held possible at times for the Santa Clarita, Grapevine and Acton areas.
And to the south, increasing tropical activity in the Eastern Pacific may bring high surf and strong rip currents to exposed south-facing beaches as early as Wednesday evening.
High surf may continue through Saturday, the NWS said.