The Western Regional Climate Center says that California’s average temperature for June, July and August was the hottest in recorded history, based on the preliminary numbers. And it wasn’t just a little hotter than average. It was a lot hotter.

Check these June-August numbers:

The mean temperature from 1900 to 2012 was 70.4 degrees Fahrenheit

The coldest year was 1907, when the average was 67.4.

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The hottest year was — yup! — 2017, with an average of 73.6.

And all that is based on the temperatures before today, the first day of September, when the Bay Area may set some all-time records.

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