Think the record was 8 degrees F prior to this. It reached 4 at 6 am.
I have seen vehicles in this area with the sliding windows broken before. I thought someone had tried to break into em. Now I think differently.
The glass had all fallen outward and into the pickup bed.
I had just driven it and ran the heater/defroster. Parked it and when I came out the next morning.

Thinking it's a temp. and dryness v dampness issue.
This area is about 60 miles east of Reno Nevada.
Winds here sometimes get pretty high. Reports are it can gust up to 70 mph in this area.