The National Weather Service San Francisco forecasts a slight shift in the weather pattern for the Bay Area. A cooling trend is expected today and tomorrow before minor HeatRisk indicators tick upward into next week. The gradual change comes as San Franciscans trade in their heavy coats for lighter attire in anticipation of warmer days. "Gradual cooling today and tomorrow before more widespread minor HeatRisk returns on Sunday into the beginning of next week," mentions the recent NWS San Francisco update.
The NWS warns, despite the high clouds ushering in some cooler air, that a deep layer of dry air will prevent any significant moisture from dipping into the region. While announcing the cooling, the weather service also raised the possibility of marine layer drizzling along the coast in the early hours. However, as cited by the National Weather Service, "confidence is low with the high clouds moving in." Residents in coastal areas can expect normal temperature ranges, while inland locales will experience temps 5-10 degrees warmer than usual. A slightly warmer than normal day in the southern valleys of Monterey County will see temperatures rise into the mid-80s.
Looking ahead at the weekend, a secondary trough is set to deliver a cooler, drier airmass into the region and will herald a weak cold front pushing southward. Nighttime temperatures are expected to dip on the cool side but will recover adequately during the day, basking under an increasing sun angle. The National Weather Service said, "Expect pleasant temperatures and plenty of sunshine inland through the extended forecast."
For those hitting the skies, the aviation forecast spells conditions that could lead to variable visibility at Bay Area airports. "Mix of cloud conditions this morning as a weak elevated front moves through, resulting in a difficult forecast this morning," as the National Weather Service described it. In the marine areas, sailors should beware of stronger breezes later today, with a chance of gale-force winds overnight in the northern outer waters and areas south of Point Sur. Beginning this afternoon, a Small Craft Advisory goes into effect for several zones. Additionally, a northwesterly swell is set to arrive by Saturday morning, prompting further caution on the water.
