Are California Heatwaves Getting Hotter?


By Paul Homewood

Are heatwaves in California getting worse?

I am sure that the vast majority of people would say yes. And that is certainly the relentless message put out by vested interests, and their buddies in the media.

If we check out the summer maximum temperature trends from NOAA, we find that even this summer and last year’s have not been as hot as 1960. Other summers, such as 1981 and 1996 also feature up there.


What we do find instead is that minimum temperatures have risen sharply. This strongly suggests that there is a significant UHI effect.


These trends are, of course, based on the heavily adjusted temperatures used by NOAA, which tend to cool the 1920s and 30s. To get a better perspective, we can look at whisker plots of daily temperatures, which are recorded before adjustments take place.

CDIAC list USHCN stations with the…

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