Weather News

SLO County weather forecast for week of Sept. 9: Wind to cool things down early in the week

Watch dogs frolic in a pool during Dog Splash Days in Templeton

Dogs of all shapes and sizes cool off Saturday in the Templeton, California, Community Park swimming pool after it closes for the year. The two-day event continues from 10 a.m. to 4 p.m. Sunday.
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Dogs of all shapes and sizes cool off Saturday in the Templeton, California, Community Park swimming pool after it closes for the year. The two-day event continues from 10 a.m. to 4 p.m. Sunday.

Monsoonal moisture that produced last week’s warm and humid conditions has moved eastward out of the Central Coast.

In its place, a steep pressure gradient will develop along the California coastline Sunday through Tuesday as a series of low-pressure systems sweep through the West Coast. These systems won’t produce any rain along the Central Coast, but they will create strong to gale-force (25 to 38 mph) afternoon and evening northwesterly winds.

In fact, these winds may build to moderate gale-force to fresh gale-force (32 to 46 mph with gust to 55 mph) levels along the coastline Monday into Tuesday. Except for marine low clouds during the morning along the coastline and variable mid to high-level clouds, clear skies are forecast to continue through this week.

These northwesterly (onshore) will bring cooler temperatures to the inland and coastal valleys. Inland valley temperatures will cool to the mid-80s, and coastal valley to the mid-70s on Monday. The beaches will remain in the 60s, expect for the southerly facing beaches of Cayucos and Avila beach which will reach the mid-70s.

High pressure will build back over the Central Coast over the latter half of this upcoming week, warming temperatures to above-average levels through next weekend.

Surf report

Moderate gale-force to fresh gale-force (32 to 46 mph) northwesterly winds are forecast to start Monday, generating a 5- to 7-foot northwesterly (310-degree, deep-water) sea and swell (with a 5- to 8-second period) into Tuesday. A 4- to 6-foot northwesterly (310-degree, deep-water) sea swell (with a 5- to 8-second period) is forecast along our coastline Wednesday through next Friday.

The 1- to 2-foot Southern Hemisphere (210-degree, deep-water) swell (with an 18- to 21-second period) that arrived along our coastline Saturday, increasing to 2 to 3 feet (with a 16- to 19-second period) on Sunday, will remain at this level through Wednesday.

Seawater temperatures will range between 51 and 55 degrees.

This week’s temperatures

LOWS AND HIGHS, PASO ROBLES

MON

TUE

WED

THU

FRI

SAT

SUN

53, 85

52, 87

51, 86

51, 88

54, 95

56, 100

58, 98

LOWS AND HIGHS, SLO AND COASTAL VALLEYS

MON

TUE

WED

THU

FRI

SAT

SUN

55, 76

53, 78

53, 75

53, 78

54, 83

56, 85

57, 83

John Lindsey’s column is special to The Tribune. He is PG&E’s Diablo Canyon marine meteorologist and a media relations representative. Email him at pgeweather@pge.com or follow him on Twitter: @PGE_John.
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