I am just back online from taking 40 from Cali to NC.(Left 11PM PST saturday, got in around 2PM today) Six people, one with a shorter bladder time meant we spent more time in stops than when I've done this before as a duo.
New Mexico/Arizona as of our driving through, just had snow/ice/water off the sides of the road as of driving through. Not sure what new weather has hit since Sunday.
This picture from California speedway before our 12hr race Saturday, shows snowfall on the mountains, but it melted within a few hours and all was brown again.