Northern NM & AZ does get cold in the winter. High Elevations. But not socked in with snow & cold all the time. The I-10 route much more likely to be free of snow & less cold.
There is much to see & do in the
Santa Fe & Bandelier Nat'l Mon't area of New Mexico -A Trip Report last summer.
Bandelier Nat'l Mon't is off US 285. We were there in August last year. Not too hot at all. Cools off quickly after sundown each evening. I believe we were there years ago in July. Warmer during the day, but cool nights.
Los Alamos is a very neat small city in itself. Free bus system with very neat buses. Very pretty setting up in the high country. Somewhat of a gated community as well. We only drove through & stopped at a SuperMarket. A nice town.
http://www.visit.losalamos.com/http://www.losalamosnm.us/transit/Pages/default.aspx More on the Santa Fe Area Expanded & ABQ.
More on the
Sante Fe Area Plus. And
Campgrounds in Santa Fe.
From Santa Fe head east (Northbound on I-25) to take US 285 S to I-40. I-40 E toward Amarillo. Near Santa Rosa on this route just Off I-40,
Santa Rosa Lake State Park would be another nice place to overnight. Never been there myself.
Off I-25 between Santa Fe & Las Vegas,
Villanueva State Park. It is off the 25 a bit. Somewhat off the beaten path. However, one can use NM 3 to cut down to the I-40 from Villanueva. We did that one visit.
There is
Conchas Lake State Park NorthEast of Tucumcari as well. Somewhat of a detour to get to it.
Near Amarillo: Never been to the state park either, but have read about it & would like to make it over there someday.
Palo Duro Canyon State Park as well as Caprock Canyons State Park, from what I have read, seem like very neat areas to see.
Caprock Canyons State Park & Trailway would make a neat place to check out. One I would like to see. For perhaps a neat experience,
Copper Breaks State Park near Quanah sounds pretty cool.
An older post (some of the above) but with info on the
Southern Route AZ, NM & TX.
Ditto on
South Texas RGV.