>>2782400It is mostly a gap in the Koppen system that leads to much of the strangeness in classification for areas of the west, like oceanic climates in the middle of New Mexico and Mediterranean in snowy forest highlands in AZ. This is why you will see a place like Flagstaff, AZ get classified as one of 4 different Koppen types, the more accurate method I've found is to use two precipitation calculation methods and use the best fit temperature method which I've done here
>>2782094 and usually most of that huge Mediterranean area and the strange oceanic areas end up as Csb or Dsb humid continental types, even if they are semi-arid in one of the precipitation methods (Thornthwaite in my analysis). Late summer monsoon rains throw off the Mediterranean classification to, because true Mediterranean climates don't receive significant summer rainfall in the Koppen system, like June and July on the Pacific northern Californian coast up to Seattle and Victoria in the north (those are pretty much the only months without significant rain there because of the partial reversal in the south, and in spring in Idaho and MT in the north they get significant rain and snow while the south is dry in May as the northerly reverses).
