San Diego

Mild Weather in San Diego to Give Way to Cooler Temps and Possible Light Rain, NWS Reports

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Published on April 22, 2025
Mild Weather in San Diego to Give Way to Cooler Temps and Possible Light Rain, NWS ReportsSource: https://www.flickr.com/photos/tomcio77/, CC BY-SA 2.0, via Wikimedia Commons

As the calendar marks another mild day in San Diego, the National Weather Service (NWS) has provided residents with a heads-up on the weather situation for the upcoming days. Temperatures, not much deviated from Monday's readings, are expected to remain within comfortable ranges. Coastal areas will enjoy highs of 62 to 67 degrees, the western valleys, including inland Orange County, can anticipate a pleasant 67 to 72 degrees, according to the NWS San Diego forecast. Moving inland and upward, the mountains and deserts will be experiencing slightly higher temperatures, with the high desert potentially reaching up to 84 degrees today.

A gradual, noticeable cooling trend will be arriving, with the National Weather Service discussing "a weak low pressure system moving inland along the West Coast" contributing to a drop in mercury levels. Indeed, by Thursday, inland valleys and Orange County are projected to witness temperatures 4 to 8 degrees below average. This cooling trend seems to continue steadfastly into the weekend, with Saturday's highs potentially hitting 10 to 15 degrees below the mountain's seasonal average.

The marine layer also seems to be involved in this cooling saga; it has "deepened to around 2500 feet," with widespread low clouds covering coastal waters and creeping inland across San Diego County valleys. These patterns are part of a larger scene that the National Weather Service predicts will continue "into Saturday with night and morning coastal low clouds extending well inland and onto the coastal mountain slopes."