Shipping vinyl in the summer heat


Is shipping vinyl to the desert safe? I live in Las Vegas and the average summer temperature is near 110 degrees. Most USPS and UPS trucks don’t have AC in the cargo areas.
vegasears
I call my daughter everyday at 11:30am, to remind her to get the mail. Then I wait on the phone while she goes out. That way she doesn't forget ( she is 14). Records have been packed as described above. So far, so good.
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Just to chime in, I live in Boulder, Colorado, where temps a week or so ago were in the low 90s. I wasn't home, but my wife was, when UPS delivered a (non-LP) package on one of those days. She spoke with the driver briefly: a fellow driver had recently measured the temp in the back of his UPS truck at 140 degrees Fahrenheit! So goodness knows how hot those trucks get if air temp is 110+. Probably best to avoid 'Brown' when it gets so warm.

I've gotten a handful of LPs delivered over the past few weeks, but all have been well-packed & delivered by USPS to my shaded front door, so no damage so far (knock on wood!).
God forbid UPS putting circulation fans in the truck roofs to moderate temps...