WASHINGTON -- Once again, the world hit record heat levels. The average global temperature last month tied the hottest April on record four years ago.

The National Oceanic and Atmospheric Administration on Tuesday say last month's average temperature was 14.5 degrees Celsius. That was 0.77 C warmer than the average last century.

The last time the globe's monthly temperature was cooler than normal was February 1985.

NOAA scientist Jessica Blunden said April's heat was driven especially by Siberia and Eurasia. She said the United States and Canada were the few exceptions. Canada was a bit cooler than normal and the United States was a bit warmer than normal.