textproduct: San Diego

SYNOPSIS

Santa Ana winds will develop and strengthen this morning with gusts to 35 to 45 mph along and below the coastal slopes of the mountains. The winds will weaken some this afternoon with more localized winds with gusts to 30 to 40 mph continuing into Saturday morning. High temperatures will warm for today and Saturday with Saturday high temperatures 10 to 15 degrees above average for the coast and valleys. Inland areas will continue to warm on Sunday while coastal areas begin to cool with only slight changes for Monday and Tuesday. For Wednesday and Thursday, high pressure aloft will weaken and onshore flow will strengthen. High temperatures will cool with Thursday high temperatures a few to around 5 degrees below average.

SHORT TERM (Today through Sunday)

Offshore flow will develop and strengthen this morning with northeast winds gusting to 35 to 45 along and below the coastal slopes of the mountains. The winds will diminish some during this afternoon with more localized winds with gusts to 30 to 40 mph continuing through tonight into Saturday morning.

High temperatures today will warm around 5 degrees for the deserts to around 10 to 15 degrees for the valleys and inland Orange County. There will be additional warming of around 5 degrees for most areas on Saturday. High temperatures on Saturday will range from the 70s near the coast to the 80s for the Inland Empire and inland Orange County with the lower deserts around 90.

For Sunday, onshore flow will bring cooling of a few to around 5 degrees for the coast and valleys with the mountains and deserts warming around 5 degrees. High temperatures on Sunday will range from the lower 70s near the coast to the lower to mid 80s for the Inland Empire with the lower deserts in the mid 90s.

LONG TERM (Monday through Thursday)

Not much change is expected for Monday with the coast and valleys slightly cooler on Tuesday with the mountains and deserts slightly warmer. For Wednesday and Thursday, high pressure aloft over California will weaken and onshore flow across southern California will strengthen. This will spread cooling inland of around 5 degrees on Wednesday and another 4 to 8 degrees on Thursday with Thursday high temperatures a few to around 5 degrees below average. High temperatures on Thursday will range from the 60s near the coast to the lower 70s for the valleys and inland Orange County with the lower deserts in the 80s.

There is a slight chance of showers for Wednesday night through Thursday night but with large spread and low confidence in the details.

AVIATION

030500Z...Coast/Valleys/Foothills...BKN low clouds through most of the coastal basin currently with bases 2000-3000 ft in San Diego County, and above 3000 ft elsewhere. Low clouds will slowly clear out from north to south, with San Diego County clearing by 10-12Z as offshore flow moves in. Simultaneously, north to northeast winds pick up along coastal slopes, foothills, and downwind of the Cajon/Banning Passes into the Inland Empire. Gusts 35-50 kts expected for coastal slopes of the San Bernardino/Santa Ana mtns and just below the Cajon Pass. Gusts 25-35 kts elsewhere. Winds weaken for all areas 03-06Z Sat with gusts over 20 kts becoming confined to coastal slopes.

Mountain ridges/deserts...VFR conditions expected through Friday evening. Gusty westerly winds will weaken over the next few hours and turn north to northeast by 12Z. The exception will be the Coachella Valley where winds will remain strong with gusts 25-35 kts at KPSP and KTRM through early Friday afternoon.

MARINE

Northwest winds approaching 20 kts over outer coastal waters currently will weaken within a few hours. Otherwise, no hazardous marine conditions expected through Tuesday.

CLIMATE

Similar to Palm Springs, Borrego Springs also set or tied a large number of temperature records in March 2026, though with a period of record going back to 1965 versus 1893 for Palm Springs. Here are some of those details for Borrego Springs for March 2026:

- The new warmest average temperature for March is now 77.3 degrees, exceeding the previous record of 72.7 in 1972 by 4.6 degrees! If that warmest average temperature for March of 77.3 had occurred in April, it would have been the second warmest April on record.

- The new warmest average MINIMUM temperature for March is now 62.4 degrees, exceeding the previous record of 57.7 in 2015 by 4.7 degrees!

- The new warmest average MAXIMUM temperature for March is now 92.2 degrees, exceeding the previous record of 88.5 in 1972 by 3.7 degrees.

- The new highest temperature for March is now 106, set on 20 March 2026. Prior to 2026, the record was 101 on 31 March 1989. That 1989 record was exceeded on four days in March 2026, from the 18th-21st, and also tied the pre-2026 record of 101 on the 27th of March 2026.

- The new warmest daily minimum temperature for March is now 74, set on 29 March 2026. Prior to 2026, the record was 70 on 7 March 1972. That 1972 record was exceeded on SIX days in March 2026 on the 17th, 19th-21st, 29th, and 31st and tied the pre-2026 record of 70 on the 18th of March 2026.

- Daily high temperature records were broken on 11 days and tied on one day. Four of those new daily records exceeded the record for the month prior to 2026. There was a 19-day stretch from the 19th to the 30th where every high temperature was within the four warmest for the date.

- Daily warmest low temperature records were broken on 13 days and tied on another one day. The new March record of 74 on the 29th exceeded the previous record for the date by 11 degrees! The new records on the 1st and 19th exceeded the previous record for the date by 9 degrees! Six of the new daily records exceeded the record for the month prior to 2026 and two tied that pre-2026 record. There was a 20-day stretch from the 12th to the 31st where every low temperature was within the five warmest for the date.

SKYWARN

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

SGX WATCHES/WARNINGS/ADVISORIES

CA...Wind Advisory from 5 AM early this morning to 8 PM PDT this evening for Orange County Inland Areas-San Bernardino County Mountains-San Bernardino and Riverside County Valleys-The Inland Empire-San Gorgonio Pass near Banning- Santa Ana Mountains and Foothills.

PZ...None.