San Diego to have a warm spell over the weekend, then cool off

After several days of coolish weather, San Diego will experience a brief warm spell over the weekend as temperatures rise 5 to 10 degrees above average from the inland valleys all the way to the coast, says the National Weather Service.

Forecasters say downtown San Diego will reach the low-to-mid 80s, with Saturday being the hottest day. The inland valleys will report highs in the low-to-mid 90s. The region’s deserts will reach the 105-115 degree range.

San Diego International Airport has received only 3.34 inches of precipitation since the rainy season began on October 1st — a figure that’s about 7 inches below average.

But forecasters say a wildfire warning isn’t likely to be issued because air temperatures won’t be super-hot, the relative humidity will be reasonable, and strong Santa Ana winds are not expected.

Even so, firefighters will be watching for any sign of smoke in East County, where the vegetation is dry.

At the coast, sea surface temperatures are continuing to fall after they experienced one of the greatest rises in decades. On Friday afternoon, the water at Solana Beach was 74. It was 71 further south, in Mission Beach. Solana Beach hit 81 in August.

On Saturday, the surf will be in the 2-foot to 3-foot range in South County and North County. The surf will rise about a foot on Sunday. The surf will pick up a little bit on Monday and Tuesday. But a major swell is not imminent.

Snorkeling conditions in La Jolla Cove will be reasonably good on Saturday and Sunday.

Forecasters say a cooling trend will begin late Sunday or early Monday and last into mid-week. NOAA’s long term forecast suggests that the region will be warmer than average Sept. 11-17.

If skies are clear, people will be able to briefly see the International Space Station fly over the region on Sunday, Monday, and Tuesday, says NASA.

The first sighting opportunity will begin at 6:02 a.m. on Sunday when the space station will be visible for six minutes, which is uncommonly long. The orbiter will be moving from low on the northwest horizon to low in the southeast, NASA says.

On Monday, the space station will be visible for five minutes, starting at 5:11 a.m. The orbiter will be moving from low in the North-Northwest to low in the East-Southwest.

The space station orbits earth at 17,000 miles at an average attitude of 240 miles. It looks like a shiny ball bearing as it moves across the sky.

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