 

Field
20C 2m temperature
daily mean 4x Daily NOAACIRES 20th Century Reanalysis V2c
X axis: whole world in 192 1.88° steps, first point at 0.00° E, last point at 358.12° E Y axis: Gaussian grid with 94 steps, first point at 88.54° N, last point at 88.54° S 1daily data available from 01Jan1851 to 31Dec2014 ( 60024 times) Variable air (daily mean 3hourly Air Temperature at 2 m) in degK Full metadata. The associated land/sea mask is available for some operations Construct a statistical forecast model from this field Compute zonal mean
Compute annual cycle
If you really want to get it here, 20C 2m temperature is available as a netcdf file (size 2392.72 MB). 
© KNMI
