January-April 2013 has been the twentieth coldest on record in the US, and the coldest since 1993. 2008 was the 27th coldest, and 2011 was the 28th coldest. 2012 was the warmest.
The vast majority of the US have seen below normal temperatures in 2013.
Alarmists love to cherry-pick 2012, but it was an outlier in a strong fifteen year cooling trend.