"Figure 6. Record Daily High and Low Temperatures in the Contiguous 48 States, 1950-2009",,
Source: EPA's Climate Change Indicators in the United States: www.epa.gov/climate-indicators,,
"Data source: Meehl et al., 2009",,
Web update: May 2014,,
Units: Percent of daily records,,
,,
Decade,High %,Low %
1950s,0.520673299,-0.479326701
1960s,0.435513688,-0.564486312
1970s,0.439165652,-0.560834348
1980s,0.531705795,-0.468294205
1990s,0.575505419,-0.424494581
2000s,0.671583763,-0.328416237