A second cool front moved over the Denver, CO area on the 12th of August, preventing temperatures from climbing over 90°F for only the second day this month. Through the 12th, the NWS recorded 10 90°F+ days, including 3 days at 98°F – narrowly missing another 100°F reading.
Total 90°F+ Days
The total number of 90°F+ days for Denver so far in 2012 is now 56! That value ties for 3rd most 90°F+ days in Denver’s history, which occurred in 2002. Unlike 2002, Denver will very likely record additional 90°F+ days, which will move 2012 into at least sole possession of 3rd most 90°F+ days. Still ahead of 2012 and 2002 in the record books: 60 days in 1994 and 61 days in 2000.
The high temperature in Denver could threaten 90°F, but might fall just short. Tomorrow and Wednesday should see 90°F+. The NWS forecasts includes another cool front to move through the area – giving us high temperatures of only 75°F or so! To put that in context, nighttime low temperatures were just slightly cooler than that early last week (69°F). Through Friday then, Denver should record 58 90°F+ days. The weekend could provide one or two more 90°F+ days (likely just one).
That takes us just past mid-August. There will be a decent number of chances through mid-September to record additional 90°F+ days. So at this point, I feel confident that 2012 will challenge 2000 for the year with most 90°F+ days. In contrast, I am more convinced than last week that Denver will record no additional 100°F+ days in 2012.
The above does not mean that the drought affecting Denver or Colorado is anywhere near over. We need serious precipitation and that isn’t likely to occur for a number of weeks still. Perhaps as we move into autumn and ENSO returns to neutral or weak El Nino conditions, some sub-tropical moisture will find its way over the US again.