Late Season Heat

The numerical guidance is united in forecasting at a one or two day hot spell this weekend, with Sunday being the hottest day...with highs well into the 80s. So what's the history of late season heat in Fairbanks? Well, the temperature has been 85F or above exactly six times August 15th or later, most recently in 1977. The highest is 90F, is August 20, 1923. While I'm skeptical of much of the pre-1930 data for Fairbanks, this one looks plausible, with most sites in the Interior reporting highs in the mid 80s for that event.