If you are interested in expanding the definition to 'sunniest' there are some WMO/NOAA stations which measure cloud cover in octaves (where 0/8 is completely s

If you are interested in expanding the definition to 'sunniest' there are some WMO/NOAA stations which measure cloud cover in octaves (where 0/8 is completely sunny and 8/8 is totally cloudy) A cool indipendent small website that has a summary is ogimet.com Here is a summary of Chicago O Hare WMO/NOAA Station no. 72530: https://www.ogimet.com/cgi-bin/gsynres?lang=en&ord=REV&ndays=30&ano=2023&mes=11&day=15&hora=18&ind=72530 https://www.ogimet.com/cgi-bin/gsynres?lang=en&ord=REV&ndays...