San Diegans are looking at a weekend warmup with temperatures poised to hover above seasonal averages, according to the National Weather Service San Diego. Coastal residents and valley dwellers can expect a spike in warmth that edges near and surpasses the average for this time of year. For those in the mountains and deserts, temperatures will likely climb slightly above the norm. A pleasant Saturday is on the cards, with abundant sunshine, so it's a perfect time to plan outdoor activities, as per the National Weather Service.
The warming trend will continue through Monday as a high-pressure system strengthens its grip, bringing sparse low clouds that mainly linger around immediate coastal areas. "A trough of low pressure will deepen along the West Coast the middle of next week and bring a chance of precipitation along with cooler weather and gusty mountain and desert winds," said the National Weather Service San Diego in their Area Forecast Discussion. It seems the current clear skies will be briefly interrupted by this changing pattern, which could awkwardly disrupt an extended spell of dry weather.
Temperatures have been plummeting rapidly overnight in the inland valleys, prompting areas of patchy frost warnings as lows near or drop below freezing. However, coastal regions might additionally brace for some inclined fog coverage with the incoming surface high pressure and reduced inversion. This could spill into inland valleys by night. Despite the chill, the daytime highs for today are set to be slightly warmer, keeping in step with seasonal norms. The NWS discussion highlights that while areas along the coast could experience a marine layer that thickens come Sunday, conditions will remain dry due to a ridge keeping moisture to the north at bay.
Model projections suggest a potential shift by Sunday for spells of light precipitation, with a minor chance of showers reaching further southward into coastal waters. "Deterministic models reveal that the upper level low associated with the trough well upstream to the north will begin to progress southeastward," according to the NWS discussion. By Tuesday into Wednesday, there's a possibility of increased precipitation over much of the region, with the highest probabilities for rainfall expected over more populated and mountainous areas. While this might be a welcome relief for drought conditions, the incoming system suggests no significant threat to mariners through Tuesday, with marine conditions expected to remain relatively tame.
.jpg){kind=link}