I think that you are a bit optimistic about the temperatures. We have similar weather to Taos, probably not as cold at night. And just looking at the last 2 years, we have been down to 11. Many nights in the 20's and daytime highs from the 30's to 70. And yes, it can snow a lot in March.
Your description sounds more like late April. When it still can snow, but won't last.
Although, the weather can be very nice for longs periods in March.
David
2012 Fleetwood Discovery 40G
2012 Jeep Wrangler Unlimited
2019 Jeep Wrangler Unlimited