SLO County weather forecast for the week of Nov. 27

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

A cold front was forecast to pass the Central Coast on Sunday night, with rain followed by an upper-level trough early Monday morning with rain showers. Rainfall amounts are expected to be around one quarter of an inch. The front will also bring a colder air mass back to the Central Coast and snow to the Sierra Nevada mountains. Snow levels may fall to near 5,000 feet by Monday morning.

Strong to gale-force (25 to 38 mph) west to northwesterly winds are forecast later Monday morning into Monday afternoon, shifting out of the northeast and decreasing to fresh to strong (19 to 31 mph) levels Monday night into Tuesday. In fact, these fresh to strong (19 to 31 mph) Santa Lucia (northeasterly) winds will continue through Friday which will produce bone-dry weather with cold mornings and mild afternoons. The longer-range models are still advertising a possible shift to a wet and unsettled weather pattern during the first week of December, but please remember these are long-range charts and will probably change.

Surf report

A prolonged period of higher swell conditions will continue into next week.

A 5- to 7-foot northwesterly (305-degree, deep-water) swell (with a 17- to 19-second period) will arrive along our coastline Sunday evening, increasing to 10 to 12 feet (with a 13- to 15-second period) Monday afternoon and night. This swell will decrease to 8 to 10 feet (with an 11- to 13-second period) Tuesday. Combined with Monday’s northwesterly swell will be 5- to 7-foot westerly (270-degree, shallow-water) seas (with a 4- to 8-second period) Monday morning.

An 11- to 13-foot northwesterly (310-degree, deep-water) swell (with an 18- to 20-second period) is expected along our coastline Wednesday, decreasing to 10 to 12 feet (with a 16- to 18-second period) Thursday.

A 9- to 11-foot northwesterly (295-degree, deep-water) swell (with an 18- to 20-second period) is expected along our coastline Friday into Saturday, increasing to 10 to 12 feet (with a 14- to 16-second period) Sunday.

Seawater temperatures will range between 54 and 56 degrees through Friday.

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At PG&E, your safety is our first concern. If it rains Sunday night into Monday morning, be especially careful; rain could release oil and grease that has accumulated on our roadways, creating slippery conditions. Please, slow down and give yourself extra time to reach your destination. Driving too fast is the No. 1 cause of accidents on wet days.

This story was originally published November 26, 2017 at 2:25 PM with the headline "SLO County weather forecast for the week of Nov. 27."