Is June getting cooler?

Here is a fascinating graph from UW meteorologist Mark Albright showing the average temperatures for June at Seattle Tacoma Airport from 1957 to now:

Is June getting warmer? The answer: No. In fact there is a slight cooling trend. Mark notes that June 2010 was 5.5F colder than June 2009!--no surprise to any of us-- and that this June was the 5th coldest in the past 54 years. Again, no big shocker.

Interestingly, regional simulations of the local implications of global warming for western Washington and Oregon suggest an increase of low clouds here as the continent warms--so June may get WORSE under global warming. Why? A greater onshore pressure difference as the interior warm (and pressure thus falls) and stronger offshore high pressure. We just can't win. So you can look forward to Junuary stories in the Seattle Times in 50 years....some things never change. But perhaps we will have an income tax then.

Saturday still looks decent. Showers and clouds on July 4th. And then the big heat wave.