Snow-yes. Ice-yes. On the highways, possibly. Most likely scenario is that the roads will be clear when you travel. When you get closer to your travel dates then you will have to check the weather and road conditions in Arizona.
Las Vegas sits at about 2000 feet, and by the time you arrive at GC and Flagstaff you will be between 6000-7000 feet in elevation, so you will find colder temps and accumulated snow in Feb.
Book your lodging for GCNP in the park lodges. If you stay in Flagstaff, you will spend 4 hours of limited daylight driving back and forth. It is also a very worthwhile experience to stay in the park.
Confirming. Flagstaff is a long detour on a route from LV to the GCNP. Delete it from your plan unless you have 3-4 days for the trip. Book your GCNP lodging right now. www.grandcanyonlodges.com
Expect winter weather conditions. Do not drive during an active snow storm.
Thanks to repondents. I'm reconsidering trip at a later date. although LV is a definite.We did plan for several days of travel to GC and Flagstaff.
Sometimes there is a warm spell in February. If your plans are flexible, you can just watch the weather and cancel if it's not appropriate for driving. Check out also AZ511.gov for road closure info in addition to the usual weather sites for forecasts.
If your in flagstaff i highly recommend a trip down the canyon to Sedona. The highway route is fast but the route in the canyon is AMAZING and it's still just a short drive. It's so awesome to go from conifer Forrest to dessert in a few minutes. Don't miss it. So much to see in Sedona area if you enjoy nature.
There is a train from Williams AZ to south rim of GCNP that we enjoyed several years ago. Good way to get there without worry about snow. See if its still running.
Our plans included a side trip to Sedona.
However we are rethinking our trip. Perhaps a later date when we Floridians don't have to worry about possible snow and very cold weather.
If you're looking for the time of year with the best weather, that would have to be late September-early October. Temperatures are cooling, but not to the point where snow is an issue (not usually); plus crowds are typically thinning since most kids are back in school, though it's still busy, so advance planning (reserving lodging, etc.) remains a must.
The Grand Canyon Railway that Denise W refers to is fun, but does not travel along the canyon rim or through the canyon; you don't see the Grand Canyon until you get into the park and get off the train, and once there you only have about a 3.5 hour layover in the park. If you think that's all the time you need, and/or you're a train buff, it might be fun for you. Otherwise, the Grand Canyon is a very easy park to tour with your car on a self-guided basis. The majority of in-park roads are open to private vehicles, the only one that isn't (the Hermit's Rest/West Rim Drive) is served by a free shuttle system.
Hope that helps.