Area Forecast Discussion
Issued by NWS San Diego, CA
Issued by NWS San Diego, CA
340 FXUS66 KSGX 021057 AFDSGX Area Forecast Discussion National Weather Service San Diego CA 357 AM PDT Wed Jul 2 2025 .SYNOPSIS... Minor cooling is expected each day through Thursday. Gradual warming is expected Friday through the weekend. Night and morning low clouds and fog are expected to remain persistent along the coast and into portions of the valleys through the week. && .DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE... SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES... .SHORT TERM (Today through Friday)... A low pressure system moving inland through California today will continue to spread slow cooling inland through Thursday with Thursday high temperatures ranging from around 70 near the coast to the 80s and lower 90s for the Inland Empire with 106 to 110 for the lower deserts. A marine layer near 2000 feet deep will deepen to around 2500 feet on Thursday with night and morning coastal low clouds spreading farther into the valleys for early Thursday and early Friday. && .LONG TERM (Saturday through Tuesday)... Drier with slow warming through the weekend with high temperatures warming around 5 degrees from Thursday through Sunday. With the warming, high temperatures on Sunday will range from the lower 70s near the coast to the upper 80s to mid 90s for the Inland Empire with 109 to 113 for the lower deserts. High pressure to the southeast will continue the warming into the middle of next week with Wednesday high temperatures 4 to 8 degrees above average for inland areas with high temperatures of 112 to 115 for the lower deserts and in the 90s to 103 for the Inland Empire. There could be some influx of monsoonal moisture around Tuesday and Wednesday of next week with NBM thunder probabilities increasing to 10 to 15 percent each afternoon for the San Bernardino Mountains. Night and morning coastal low clouds will continue to spread inland into portions of the western valleys late each night. && .AVIATION... 021000Z....Coast/Valleys...Low clouds with bases 1000-1500 ft MSL have pushed 15-20 miles inland covering coastal areas and western valleys of SD/Orange Counties. Any further inland push will be slow to occur. Only 40% chance of BKN CIGs at KONT after 12z. Local vis 3- 5 SM in BR/HZ where clouds near terrain in the valleys, including VCTY KAJO, KRNM, KCNO. Clouds clearing to the coast 15-18Z. 50-60% chance CIGs remain BKN at SD County beaches through the afternoon. Clouds push inland again after 03Z with bases near 900-1300 ft MSL and similar inland extent. Mountains/Deserts...SCT clouds in the 10-15 kft layer and occasional virga/light showers continuing over the deserts through about 18Z Wednesday. Otherwise clear with unrestricted vis through Wednesday evening. && .MARINE... No hazardous marine weather conditions are expected through Sunday. && .BEACHES... Building southerly swell (190 degrees) of 3 feet at 14-16 seconds will generate elevated surf of 3-5 ft with sets to 6 ft along southerly facing beaches Thu-Sat. In addition, strong rip and longshore currents expected at all beaches Friday and Saturday. Swell and surf will begin to lower on Sunday. && .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/BEACHES...KW