The spring (March/April/May) of 2010 in the northern hemisphere was the warmest (land/sea combined) on record going back to 1880, according to the Goddard Institute for Space Studies (GISS).
The northern hemisphere averaged .96 C above the 1951-1980 base period normal.
The southern Hemisphere experienced its second warmest fall (Mar/Apr/May) on record with temperature anomaly of +.50 C.
Now, since both the northern and southern hemisphere had record or near record warmth, you must figure that Mar/Apr/May 2010 was a record for the globe. Indeed it was!
Mar/Apr/May 2010 was the warmest on record for that three month period with a temperature departure of +.73 C. The old record was +.65 set in 2002.
How about May by itself?
May 2010 was tied with May 1998 as the warmest May on record for the land/ocean surface with a temperature departure of +.63 C, according to GISS.
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