707 FXUS66 KSGX 130942 AFDSGX Area Forecast Discussion National Weather Service San Diego CA 242 AM PDT Fri Jun 13 2025 .SYNOPSIS... Generally seasonal weather will prevail through next week. High pressure to the south will bring warming for the weekend with Sunday high temperatures around 5 degrees above average near the coast to 10 degrees above average farther inland. Cooling early next week to around 5 degrees above average on Tuesday, then slightly warmer on Wednesday and slightly cooler on Thursday. Night and morning coastal low clouds will continue to spread into portions of the valleys. && .DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE... SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES... .SHORT TERM (Today through Sunday)... High pressure to the south will bring warming for the weekend. High temperatures for today will be a few degrees warmer for the coast and valleys with not much change for the deserts. There will be additional warming for the weekend with Sunday high temperatures around 5 degrees above average near the coast and 10 degrees above average farther inland. High temperatures on Sunday will range from the lower 70s near the coast to the 90s for the Inland Empire with 110 to 114 for the lower deserts. A marine layer near 2000 feet will decrease to 1500 to 2000 feet over the weekend with night and morning coastal low clouds not spreading as far into the valleys. && .LONG TERM (Monday through Thursday)... A low pressure system moving inland through California on Monday will strengthen onshore flow with cooling spreading inland on Monday and Tuesday. Tuesday high temperatures will be around 5 degrees above average, ranging from the lower 70s near the coast to the mid 80s to mid 90s for the Inland Empire with 106 to 110 for the lower deserts. Wednesday will be slightly warmer and Thursday slightly cooler. The marine layer will be around 2000 feet deep with night and morning coastal low clouds spreading into portions of the valleys. && .AVIATION... 130930Z....Coast/Valleys...Low clouds based around 1000-1500 feet MSL and tops to 1800 feet will continue to spread into some of the inland valleys by 14Z. Vis reduced 0-5SM between these levels. Clouds clearing 15-17Z inland and 17-19Z for the coast, but only brief or partial clearing at the immediate coast. Low clouds will begin their move inland after 00Z and locally into inland valleys by early Saturday. Bases/vis will be slightly lower, with less inland coverage. Otherwise...SCT high clouds and unrestricted vis today and tonight. && .MARINE... No hazardous marine conditions are expected today through Tuesday. && .SKYWARN... Skywarn activation is not requested. However weather spotters are encouraged to report significant weather conditions. && .SGX WATCHES/WARNINGS/ADVISORIES... CA...None. PZ...None. && $$ PUBLIC...17 AVIATION/MARINE...MM