Weather Blog

What 'Juneuary?' Seattle now warmer than (parts of) L.A.

What 'Juneuary?' Seattle now warmer than (parts of) L.A.
Thick dark clouds hang over downtown Los Angeles early morning Tuesday, July 6, 2010.

Our recent heat stretch has tempered the discussions about our recent "Juneuary" but do you know one place where Juneuary is not only still in effect (Julember?) but was worse than up here?

Welcome to Los Angeles -- now colder than Seattle.

I touched on this in an earlier blog last week that San Diego just barely beat Seattle for average high temperature for June, but now we've pulled ahead this summer for both San Diego and Los Angeles.

So try this to stump your friends:

From June 1 to July 12 this year, the average high temperature at both Los Angeles (LAX) *and* San Diego (Lindbergh Field) this year is 67.1 degrees.

In Seattle, it's 68.4 degrees.

Since June 1, San Diego has hit exactly 70 degrees five times, and 71 twice, and that's it. Every other day has been in the 60s.

For Los Angeles, they've had 15 days in the 70s, but almost all were exactly 70 degrees, with a couple days at 72 -- their warmest temperature since June 1. On July 12th, they set a record for coldest July day on record with a high of only 65 -- two degrees *colder* than Seattle's high of 67 despite our morning drizzle and clouds.

Of course, Seattle has now had a handful of days in the mid-upper 70s, not to mention four days of 81, 90, 95 and 93 (which did a great job in skewing the data, but it counts nonetheless.)

Now, we have been much wetter than either place -- L.A.'s had just a trace of rain and San Diego is at 0.02", while Seattle is at 2.79" for the period, thanks to 17 days with rain.

And unlike how Seattle didn't get their first warm day until late June, Southern California has been quite toasty over the winter -- they had some upper 70s and even 80s in February and March, courtesy of Santa Ana winds.

** I should point out that both of these reporting stations are fairly close to the Pacific Ocean. It's not like the entire Inland Empire is in the 60s. It's still triple digits in Palm Springs, for example and in the 80s as you get farther into inland L.A.

Why would San Diego and Los Angeles be so cloudy, yet so dry? It's what they call the "June Gloom", which affects most of the Pacific Coast. It's the transition as the weather warms but the Pacific Ocean remains cool. The warm air condenses as it cools near the ocean surface and turns into low clouds -- the "marine layer". It gets carried ashore by a west wind that typically blows to replace the hot air rising from the inland desert areas.

Our own marine layer is back in charge as well after a several day break, but now back at seasonal levels and we still could give L.A. a run for the money in July.