Pittsburg has a humid subtropical climate (Köppen "Cfa") bordering on a hot-summer humid continental climate ("Dfa"). Summers are very hot, humid and uncomfortable, with as many as 73 mornings per year staying above and eight mornings remaining above – indeed in July 2012 the temperature did not fall below . The hottest morning, however, was on August 10, 2006 when the temperature did not fall below , and the hottest temperature has been on July 13 and 14, 1954. Heavy thunderstorm rains often punctuate the heat with heavy rainfall: fell on July 30, 2013. However, long periods of dangerously hot weather without much rain are not uncommon: only trace precipitation fell between July 28 and September 10, 2000, and only between July 7 and August 20, 1984.