The NCEP/NCAR index that I calculate from their reanalysis was down by 0.147°C in April, from 0.783°C to 0.636 (anomaly base 1994-2013). That is then down 0.2°C from February, and coolest for 2016, but it still warmer than any month before 2016.
Temperatures have been stable near that average level since about March 10, after some very high earlier peaks. There was this time less warmth in the Arctic (except Greenland), but a broad band of warmth through Siberia, Eastern Europe, into Africa. Cold in NE Canada; patchy in Antarctica.
Among other reports, Karsten has GFS surface down from 0.794°C to 0.706°C. Roy Spencer has UAH 6 lower troposphere down slightly, from 0.73 to 0.71°C. ENSO numbers are down, and if you watch the ENSO movie of recent weeks, you can see the equatorial jet turning to cool.