Global April temperatures were 13th highest on record; Year-to-date is eighth warmest period on record; North American snow cover ...
Note: The data presented in this report are preliminary. Ranks and anomalies may change as more complete data are received and processed. Effective September 2012, the GHCN-M version 3.2.0 dataset of monthly mean temperature replaced the GHCN-M version 3.1 …