Weather forecast for the week of Oct. 21

San Luis Obispo - The TribuneOctober 20, 2013 

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

Weather report

Gentle northwesterly (onshore) winds will allow the marine low clouds and areas of patchy fog to develop along the beaches and in the coastal valleys during the night and morning.

A few of the beaches will only see partial afternoon clearing. Away from the beaches, pleasant fall weather will continue through Wednesday with subtle day-to-day changes.

Today’s maximum temperatures along the beaches will reach the 60s, while the coastal valleys and North County will hit the low to mid-80s.

Temperatures will begin to trend cooler as an upper-level low pressure system undercuts the Eastern Pacific High and approaches the California coast Thursday. Details are unclear on the trajectory of this system, but most long-range model solutions suggest this system will slowly meander down the coast Friday and pass near San Luis Obispo County on Saturday with drizzle and light rain showers primarily along the coast.

This system is only expected to produce a few hundredths of an inch of precipitation along the shoreline, with the North County remaining dry.

Surf report

A 4-to 6-foot northwesterly (300-degree deep-
water) swell (with an 18- to 20-second period) will arrive today, increasing to
5 to 7 feet (with a 16- to 18-second period) Tuesday. This northwesterly swell will decrease to 4 to 6 feet (with a 14- to 16-second period) Wednesday, further lowering to 3 to 5 feet (with a 13- to 15-second by Thursday.

A 2- to 4-foot northwesterly (300-degree deep-water) swell (with an 11- to 13-second period) is forecast along the Central Coast on Friday and will remain at this height and period through Sunday.

Seawater temperature

Seawater temperatures will range between 57 and 60 degrees through Sunday.

John Lindsey’s Weekly Forecast is special to The Tribune. His Weather Watch column appears in the Local section Sundays. Contact him at

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