[InABunkerUnderSF]

The record high in Phoenix, 122 was set in 1990. This has been an unusually warm year, 119 last month, but my mom told me about 1933 when their thermometer, on the shady side of a barn in Tempe, broke and the kids got to play with the mercury. It measured a maximum temperature 120 so in order to break it must have been somewhat hotter than that.

I suspect you're right about the heat island effect but I also suspect that in the past temps got hotter than today but were just not measured officially. Bottom line, the climate varies and anthropogenic global warming is a leftist fraud.

[Ciexyz]

I was forced to sit thru a crappy movie trailer on the new global warming film when I went to see Dunkirk. Unhappy about that.

[palmer]

Thanks for the info, not surprising that Arizona was also hotter in the 30's

The thing about Phoenix in particular is that there is a well-studied heat island effect with numerous scientific papers written about it. The people who wrap themselves in the mantle of science never like to mention that science however.