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An upper-level low-pressure system is forecast to develop off the coast on Sunday into Monday. This system will produce gentle to moderate (8 to 18 mph) southerly (onshore) winds and will pull in abundant monsoonal moisture from the south which will produce rain showers and a chance of thunderstorms Sunday evening into Monday. In fact, the European model is advertising about three quarters of an inch of rain for many Central Coast locations Sunday into Monday.

Muggy and overcast conditions are forecast on Tuesday, followed by increasing northwesterly winds, lower relative humidity levels and partly cloudy skies on Wednesday into Friday.

Santa Maria Temperatures

Sun Mon Tue Wed Thu Fri Sat

60/83 63/85 62/77 59/78 59/77 57/76 56/76

Lompoc Temperatures

Sun Mon Tue Wed Thu Fri Sat

60/84 63/79 62/76 59/77 59/78 57/79 56/77

Santa Ynez Temperatures

Sun Mon Tue Wed Thu Fri Sat

56/95 61/89 61/88 58/86 56/84 53/82 53/83

Surf Report

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Sunday's 4- to 6-foot northwesterly (290-degree, deep-water) sea and swell, with a 7- to 15-second period, will become a 3- to 5-foot northwesterly (295-degree, deep-water) swell, with an 8- to 14-second period, along our coastline on Monday into Wednesday. A 5- to 7-foot northwesterly (310-degree, deep-water) sea and swell, with a 5- to 10-second period, is forecast along our coastline on Thursday into Friday.

Seawater temps

Seawater temperatures will range between 56 and 60 degrees through Thursday.

This Week’s PG&E Safety Tip

At PG&E, the safety of our customers and employees is our top priority. Each year in the United States, more than 400 people are struck by lightning. There is no safe place outside in a thunderstorm. Remember, “when thunder roars, go indoors!”

John Lindsey is Pacific Gas and Electric Co.’s Diablo Canyon Power Plant marine meteorologist and a media relations representative. Email him at or follow him on Twitter @PGE_John.