textproduct: San Diego

SYNOPSIS

Temperatures will remain well above average this week with night and morning coastal low clouds spreading into the far western valleys at times. High temperatures for inland areas will remain around 15 to 20 degrees above average with some record daily temperatures for heat continuing to be tied or broken, mainly for the mountains and deserts and occasionally also for the inland valleys. Cooling will spread inland for the weekend into early next week, but with high temperatures for next Tuesday still around 5 to 10 degrees above average.

SHORT TERM (Today through Thursday)

Well-above average temperatures will continue into next weekend. High temperatures for today will range from around 5 degrees above average near the coast to around 20 degrees above average for the mountains and high desert. High temperatures for today will range from around 70 near the coast to the mid 80s to lower 90s for the Inland Empire with the lower deserts in the 90s. With gradual warming, high temperatures on Thursday will range from around 10 degrees above average near the coast to 15 to 20 degrees above average for mountains, valleys, and deserts. Coastal low clouds will spread inland into portions of the western valleys this morning, then not quite as far inland for tonight and Wednesday night as the marine layer becomes a little shallower.

LONG TERM (Friday through Monday)

High temperatures will warm slightly on Friday, then cool slightly during the weekend with greater cooling of around 5 degrees per day for Monday and Tuesday of next week. High temperatures on Friday will range from the 70s near the coast to the lower to mid 90s for the Inland Empire with 100 to 105 for the lower deserts. With cooling for Sunday through Tuesday, high temperatures for next Tuesday will still be 5 to 10 degrees above average with high temperatures ranging from the lower to mid 70s near the coast to the mid 70s to lower 80s for the valleys with the lower deserts in the upper 80s and lower 90s. In addition to night and morning coastal low clouds, there will also be periods of mid and high clouds for the weekend into early next week.

AVIATION

240930Z...Low clouds based 600-1000 feet MSL and tops to 1300 feet will continue to fill coastal areas and western valleys this morning. Vis reduced 0-5SM mainly over higher coastal terrain and valleys. Scatter out to occur 16-18Z. Patchy and intermittent low clouds could linger along immediate coast thereafter. Low clouds with similar bases increase and spread inland after 02Z. Coverage, bases and vis should be very similar into Wednesday morning.

Otherwise, mostly clear and VFR conditions will prevail today and tonight.

MARINE

No hazardous marine conditions expected through Saturday.

..For locations with a new highest temperature for March in 2026

Location Old Record/Date New Record/Date Days above old record

Anaheim 90 3/14/2015 100 3/17/2026 3 Santa Ana 90 3/25/1988 100 3/17/2026 4

San Jacinto 99 3/26/1988 102 3/19/2026 3 Escondido 98 3/26/1988 101 3/20/2026 1 Ramona 94 3/26/1988 98 3/20/2026 3 Alpine 95 3/23/1953 99 3/20/2026 2 El Cajon 98 3/19/1997 101 3/20/2026 1

Idyllwild 82 3/22/2004 90 3/19/2026 6 Lake Cuyamaca 82 3/22/1931 88 3/20/2026 3

Palm Springs 104 3/31/1966 108 3/20/2026 4 Indio 104 3/10/1916 108 3/19&21/2026 4 Thermal 103 3/21/2004 108 3/19-21/2026 4 Borrego Springs 101 3/27/1988 106 3/20/2026 4 Campo 92 3/20/1997 100 3/20/2026 4

-"Old record" refers to the March record prior to 2026. -"Days above old record" refers to days in March 2026 with a high temperature exceeding any March high temperature prior to 2026.

Locations with a new highest minimum temperature for March in 2026...

Location Old Record/Date New Record/Date Days above old record

Idyllwild 50 3/26/1988 53 3/17/2026 1 Lake Cuyamaca 55 3/08/2004 57 3/22/2026 1

Palm Springs 70 3/14/2017 78 3/19/2026 4 Indio 75 3/16/2013 83 3/21/2026 3 Borrego Springs 70 3/07/1967 73 3/19&20/2026 2

-"Old record" refers to the March record prior to 2026. -"Days above old record" refers to days in March 2026 with a low temperature warmer than any March low temperature prior to 2026.

++For Indio, the prior earliest date in a year for a low temperature of 80 or higher was 81 on 05/01/2015.

--This data is preliminary. There are some locations this week that could exceed the March record prior to 2026. This would add to the days exceeding the pre-2026 March record. However, it is unlikely any new monthly March temperature records will be set this week.

SKYWARN

Skywarn activation is not requested. However weather spotters are encouraged to report significant weather conditions.

SGX WATCHES/WARNINGS/ADVISORIES

CA...None. PZ...None.