San Diego

San Diego Region Braces for Soaring Temperatures as Forecasts Predict Heat Above Seasonal Average

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Published on January 27, 2026
San Diego Region Braces for Soaring Temperatures as Forecasts Predict Heat Above Seasonal AverageSource: Alen Ištoković, CC BY 3.0, via Wikimedia Commons

As the week progresses, San Diegans are experiencing a noticeable uptick in temperatures, with forecasts predicting highs that will surpass the seasonal average by a considerable margin. According to the National Weather Service in San Diego, "Temperatures will continue to warm with high temperatures getting to 5 to 15 degrees above the seasonal average Thursday through Saturday." This warming trend offers a stark shift from the cooler temperatures that greeted residents earlier in the week.

It appears that the valleys will experience the most significant temperature increase, with the National Weather Service detailing, "High temperatures will gradually warm through Friday and Saturday to as much as 10 to 15 degrees above average for the valleys." The usual cooler spots in the western valleys that dipped into the 30s are now on a slow upward climb, foreshadowing balmy conditions that lie ahead. However, the coastal regions and valleys can expect some cooling come Sunday and Monday as the week's onshore flow picks up slightly.

The forecast, which encompasses regions including Orange, San Diego, Western Riverside, and Southwestern San Bernardino counties, also points to another day of gradual warming for today through Thursday, introducing high temperatures that will range "from the lower 70s near the coast to the mid 70s to lower 80s for the valleys with the upper 70s to around 80 for the lower deserts" as per NWS San Diego's Forecast Discussion.

Meanwhile, for those with an eye on the sky or the sea, VFR conditions will prevail today through tonight, with increasing high clouds at or above 20,000 feet MSL. As for mariners, no hazardous conditions are expected through Saturday, ensuring calm waters for any late January outings. Nonetheless, as the high pressure aloft nears the West Coast weakens, the upcoming cooling period will likely be a gentle nudge rather than an abrupt drop in temperatures.