I’ve just found this website https://mesonet.agron.iastate.edu/request/download.phtml?network=IN__ASOS One can get historical METAR for the whole world, as far as I’ve understood. There used to be a rmetar package for translation of METAR to human readable weather data.
I wonder whether these METAR data are already accessible through NOAA for instance, or would it be an useful addition to make a package for accessing it?
On NOAA website I could only find the current reports, e.g. http://weather.noaa.gov/pub/data/observations/metar/decoded/VOHY.TXT
This package https://cran.r-project.org/web/packages/nycflights13/nycflights13.pdf e.g. includes weather data from Iowa Environmental Mesonet.
Besides, the Mesonet website seems to provide other data than METAR. https://mesonet.agron.iastate.edu/json/
I’ve tried to find corresponding r packages on Google but I might have missed something!