Last year recorded the smallest percent of stations to reach 90 degrees in US history. Only 84% of US HCN stations reached 90 degrees. This was the first year when more than 15% of stations failed to reach 90 degrees any time during the year.
Compare to 1931, when less than 2% of US stations failed to reached 90 degrees. This metric is compiled from the same data set NCDC uses, and is not affected by time of observation issues.
The percent of daily readings above 90 degrees was also near a record low.
And it wasn’t just summer that was cool. Before NCDC data tampering, last winter was the 10th coldest on record, and coldest in 35 years.
NCDC says that 2014 was the hottest year ever.