The NCEP/NCAR anomaly for March was 0.566°C, almost the same as Feb 0.576°C. And that is very warm. It makes the average for the first quarter 0.543°C, compared with the 2016 annual average of 0.531°C. In most indices, 2016 was the warmest ever, so with a prospect of El Nino activity later in the year, 2017 could well be the fourth record year in a row.
You can bring up the map for the month here. It was warm in Europe, mixed in N America, warm in Siberia but cool further South, and varied at the poles. So GISS may come down a bit, since it has been buoyed by the Arctic warmth.