Interesting. Where are you able to find good sunshine stats? I also wonder how “percent possible sunshine” is calculated. Like there are many days with a thin high deck, would that count as 100 percent cloudy? What about a good old showers and sunbreaks type of day with popcorn storms? It seems like it could be a very subjective stat. Still bonkers that July 1993 was as low as 34 percent at PDX. It must’ve been even worse here. Since I was a kid then, it would’ve given me the perfect excuse to stay inside and play SNES all day.
Interestingly... 1993 actually ended up fairly average overall in the sunshine department. July was the cloudiest on record at PDX with the sun out a ridiculously minuscule 34% of the time (this is the same as a typical February!) However, 1993 had a very sunny February and a rainy season that basically didn't begin until Thanksgiving, which in total actually ended up making up for it. Keep in mind the average I'm talking about here is based on pre-1995 data, though.