The heatwave that's been cooking the southwestern California region is expected to loosen its fiery grip as a cooling trend approaches, impacting areas west of the mountains as soon as Tuesday. If you're feeling the burn, there’s a hint of relief on the horizon. According to the National Weather Service (NWS) report published on September 9, daytime highs west of the mountainous areas are forecasted to drop by 5 to 10 degrees cooler on Tuesday vs. Monday. Even the coastal zones are expected to cool down, with temperatures dipping to the 70s, bringing some respite from the 80s experienced along the beaches.

Although the high-pressure system has had us sweating, its influence is decreasing as an oncoming trough will push it further south, inviting cooler marine breezes across the region. Those hitting the Inland Empire and foothills east of San Diego will still feel the heat come Tuesday, with NWS San Diego predicting highs near the scorching 110-degree mark. On the move, gusty winds are expected for mountain passes and deserts, with moderate chances to see winds over 30 MPH for passes and deserts.

There's a slight chance of showers and storms forecasted for the afternoon in the mountains, but don't hold your umbrella too tightly; confidence in precipitation materializing is pretty low. As for the marine layer, it's making a comeback along the coast and in western valleys. It's expected to deepen each night and morning, bringing patches of fog and low clouds.