From the Telluride Daily Planet (Katie Klingsporn):
This summer, though, there has been a noticeable absence of the afternoon storms. Monday — when people pulled out rain jackets and umbrellas to hide from the cold sheet of rain — was only the sixth day of rain in the month, according to a local weather reporter. And according to his tallies, the precipitation for the month is running nearly 2 inches behind average. “We’re way below average for the month,” said Thom Carnevale, who measures Telluride’s precipitation near San Juan Village. “This has been one of the driest Augusts we’ve had in the past several years.” As of Monday morning, Carnevale had recorded 91/100th of an inch of precipitation for the month, with rain falling on Aug. 5-6, 14, and 22-24. The average rainfall for June, he said, is 2.92 inches.
And this is only the second half of the story of strange summer weather. Chapter one happened in June, when what is typically one of the driest months of the year turned into one of the wetter ones. June — usually the month of sun-worshipping days — was cold and drippy this year. While the average precipitation in June is 1.22 inches, Carnevale said, this year June brought 2.59 inches — more than double the average…
For western Colorado, the southwest monsoon pattern generally begins around the second week of July, and can last into September. This year, though, Lawrence said that a consistent trough has hung over the east, while a ridge has sat over the west, “which has kept us high and dry and them wet and cold. It’s just kept us from getting a real monsoon season.”