That's a difficult topic. Besides the fact that isolated records are useless for assessing a long-term trend, there are doubts about these old record measurements. The former record of about 137F presumably measured in Libya has been declared invalid recently. There are doubts about the Death Valley record, too:
http://www.kpbs.org/news/2013/jul/15/doubts-cloud-death-valleys-100-year-heat-record/