You're in luck: NASA decided to provide the data in JSON, and Matlab can parse that JSON output for you:
url='https://power.larc.nasa.gov/cgi-bin/v1/DataAccess.py?&request=execute&tempAverage=CLIMATOLOGY&identifier=SinglePoint¶meters=T2M&userCommunity=SB&lon=0&lat=0&outputList=JSON&user=DOCUMENTATION';
data=webread(url);
data.header