San Diego’s weather turns cool, but the relief will be short-lived

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Ahh. That’s more like it.

San Diego’s daytime highs will be in the 73-77 degree range through Wednesday, a pleasant counterpoint to last week’s heat and humidity. But this will be a brief respite.

The National Weather Service says the temperature will jump to 83 on Friday, and it will be nearly as high on Saturday and Sunday. On the upside, forecasters say the region won’t experience the sort of monsoonal moisture that made people miserable last week.

“We won’t see a return of the monsoon over the next 7 to 10 days,” said Samantha Connolly, a weather service forecaster.

The monsoon was so unstable last Wednesday it sparked nearly 400 cloud-to-ground lighting strikes across San Diego County, as well as producing a little rain and few moments of hail in Pine Valley. That’s the highest number of strikes the region has received this summer.

The moist air and a deep high pressure system also caused the sea surface temperature to reach 78 last Thursday at the Scripps Pier, the highest September reading ever recorded at the 103-year-old pier. The ocean temperature was 74 early Monday and should slip a bit more as the air turns cooler and there are fewer minutes of daylight.

The marine layer is expected to stay offshore during the late afternoon and early evening hours Monday through Thursday, which is good news for Padres fans. The team will be hosting the Chicago Cubs each of those days.

But the layer could extend several miles inland during the early morning hours, which could be a bummer for skygazers who live near the coast.

The International Space Station will be visible for three minutes starting at 5:52 a.m. on Wednesday (it’ll first appear 10 degrees above the north-northwest horizon), and for six minutes on Friday, starting at 5:51 a.m., NASA says. It will first appear 11 degrees above the north west.

San Diego will experience the autumnal equinox at 12:50 a.m. on September 23. Even so, late September and early October sometimes produce some of the hottest weather the region gets each year.

The U.S. Climate Prediction Center says there’s about a 50 percent chance that the San Diego area will experience normal temperatures through the first half of autumn.

2019-09-09 20:31:04

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