First, my favorite weather source: Weather Underground. Stunningly effective graphic displays, a lot of local crowd-sourced data, and great forecasts. The link is to the Albuquerque display for whenever you read this.
About road conditions and all. Turns out the state of New Mexico has some great online information about road conditions ranging from weather to construction delays:
This is a screen shot from this morning.
It turns out that some states permit overnight parking at rest stops: Arizona and New Mexico are both in this category. I'm wondering about safety in these situations, but it's good to know it's an option.
There's similar info, presented differently, for other states, too. The whole thing is mind-boggling if your early travel planning experiences involved ordering printed "TripTiks" from AAA several weeks before your departure date.