SLO County weather forecast for the week of July 10

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

The dome of high pressure responsible for the near record-breaking temperatures will retreat back to the Desert Southwest early this week, which will produce decreasing northwesterly winds. This condition will allow the marine layer to deepen, which will produce cooler conditions. However, inland temperatures will still remain above seasonal averages.

Monday’s temperatures will range from the high 90s in the North County, the mid-70s in the coastal valleys and 60s along the beaches under mostly overcast skies.

Combined with the coastal stratus will be midlevel monsoon moisture and smoke from the Alamo and Whittier wildfires.

High pressure will rebuild back into California toward the end of the week into next weekend for more warm to hot weather, with the North County reaching triple digits again. At this time, the forecast calls for the North County to cool to seasonal averages next week for the start of the California Mid-State Fair.

Surf report

A 4- to 6-foot northwesterly (290-degree, deep-water) swell (with an 8- to 11-second period) is forecast along our coastline today into Wednesday. This northwesterly swell is forecast to decrease to 3 to 5 feet (with an 8- to 11-second period) Thursday, becoming a 3- to 5-foot northwesterly (310-degree, deep-water) sea and swell (with a 5- to 7-second period) Friday into next Sunday.

Arriving from the Southern Hemisphere: Today’s 2- to 3-foot Southern Hemisphere (175-degree, deep-water) swell (with a 14- to 17-second period) will remain at this height into Tuesday.

Hurricane Eugene, about 600 miles southwest of Baja California, will produce a 5- to 7-foot southerly (165-degree, deep-water) swell (with an 11- to 14-second period) along the Southern California coast. However, this swell is too far southeast to have much effect along the Central Coast.

Seawater

Temperatures will range between 51 and 53 degrees through Saturday.

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At PG&E, the safety of our customers and employees is our top priority. When temperatures are unusually high, avoid strenuous activities in hot, direct sunlight and drink plenty of water. Pay attention to your body. Muscle cramps, dizziness and nausea may be signs of a heat-related illness.

This story was originally published July 9, 2017 at 1:49 PM with the headline "SLO County weather forecast for the week of July 10."