Weather Watch

San Luis Obispo County weather forecast for the week of March 16

Here is this week’s weather forecast by PG&E meteorologist John Lindsey.

Temperature records were smashed Saturday. San Luis Obispo reached 90 degrees. The previous record for San Luis Obispo was 82, set in 1994. Santa Maria hit 95, seven degrees warmer than the old record of 88, which occurred in 1951. Paso Robles airport reported 89 degrees; the previous record was 85 recorded in 2013. Farther south, Los Angeles recorded a record three days of 90-plus degree temperatures.

A major change in the weather pattern will occur today as the ridge of high pressure over California responsible for the high temperatures weakens and the winds shift out of the northwest (onshore), bringing cooler marine air to the Central Coast.

Some residual subtropical moisture could produce a slight chance of rain showers in eastern San Luis Obispo and Santa Barbara counties by Tuesday afternoon. However, as the week progresses, the northwesterly winds will increase to strong to gale-force (25- to 38-mph) levels along the coast during the afternoon hours by Wednesday. That onshore flow will bring marine low clouds and areas of fog and drizzle during the night and morning hours and gradually cooler temperatures. The northwesterly winds will be especially strong and gusty Friday and Saturday.

The longer-range charts continue to suggest a wet and unsettled weather pattern next week.

Surf report

Today’s 3- to 5-foot northwesterly (290-degree, deep-water) sea and swell (with a 4- to 11-second period) is expected to build to 4 to 6 feet (with a 5- to 10-second period) on Tuesday.

As the northwesterly winds along our coastline continue to increase, the northwesterly (300-degree, deep-water) sea and swell will further increase to 5 to 7 feet (with a 5- to 13-second period) by Wednesday and will remain at that height and period through Saturday.

The longer-range models are indicating increasing west-northwesterly swell arriving along our coastline next week.

Seawater temperatures

Seawater temperatures will range between 54 and 57 degrees through Tuesday. Seawater temperatures will decrease with the greater amount of upwelling to 51 and 55 degrees from Wednesday into Friday.

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