Poway Memorial Day Weekend Forecast

Strong winds will blow through the mountains and deserts of San Diego County Friday and over coastal waters, creating perilous boating conditions, forecasters said.

A strong onshore flow will produce gusty winds in the mountains and deserts before an upper level trough brings even stronger winds late Friday afternoon through Friday night, according to the National Weather Service. The agency estimates winds will occasionally be gusting over 60 miles per hour Friday night.

A wind advisory will be in effect in the mountains and deserts until 2 p.m., when a more serious high wind warning goes into effect. The high-wind warning is set to expire at 4 a.m. Saturday.

The National Weather Service forecast for Poway:

Friday: A 30 percent chance of rain, mainly before 11am. Cloudy, with a high near 66. South wind between 10 and 15 mph, with gusts as high as 20 mph.

Friday night: A 30 percent chance of rain, mainly before 11pm. Cloudy, with a low around 53. West wind around 10 mph.

Saturday: Mostly cloudy, with a high near 68. West wind between 5 and 10 mph.

Saturday Night: Mostly cloudy, with a low around 49. North wind between 5 and 10 mph, with gusts as high as 20 mph.

Sunday: Mostly cloudy, then gradually becoming sunny, with a high near 73. North wind 5 to 10 mph becoming west.

Sunday Night: Patchy fog after 11pm. Otherwise, partly cloudy, with a low around 55.

Memorial Day: Patchy fog before 11am. Otherwise, sunny, with a high near 76.

Monday Night: Patchy fog after 11pm. Otherwise, increasing clouds, with a low around 55.