Weather Watch

San Luis Obispo weather forecast for the week of March 23

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

The trailing edge of a Northern California cold front will produce cloudy skies and few areas of drizzle this morning. Moderate gale-force to fresh gale-force (32- to 46-mph) northwesterly winds will develop along the coastline in the wake of the cold front this afternoon into Tuesday. Today’s high temperatures will range from the low to high 60s in most locations.

A high-pressure ridge will start to build over the Central Coast for a return to spring-like weather Wednesday. The high-pressure ridge will then continue to strengthen into Saturday. This condition will produce night and morning Santa Lucia (northeasterly) winds and a likelihood of another round of record-breaking warm temperatures with the interior and coastal valleys ranging between the high 80s and low 90s on Thursday, Friday and Saturday.

A weak low-pressure system may then move through the Central Coast next week for cooler weather and an outside chance of rain showers, mostly across the Sierra. Regrettably in this time of terrible drought, no significant precipitation is expected for the next 10 days to two weeks.  

Surf report

Moderate gale-force to fresh gale-force (32- to 46-mph) northwesterly winds will generate 6- to 8-foot northwesterly (305-degree, deep-water) sea and swell (with a 5- to 13-second period) this afternoon through tonight, building to 7 to 9 feet (with a 5- to 12-second  period) Tuesday into Wednesday.

This northwesterly sea and swell will lower to 4- to 6-feet (with a 5- to 11-second period) Thursday, further decreasing to 4 to 5 feet (with a 7- to 11-second period) Friday into Sunday.

Arriving from the Southern Hemisphere

A 1-foot Southern Hemisphere (190-degree, deep-water) swell (with a 22-second period) will arrive along our coastline Thursday. This swell will build to 2 to 4 feet (with a 19- to 21-second period) by Friday, peaking this weekend at 3 to 4 feet (with a 17- to 19-second period).  

Seawater temperatures

Seawater temperatures will decrease to 51 and 54 degrees this afternoon and will remain at this level through Thursday. Seawater temperatures will increase Friday into Sunday.

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