I had a house in Durango for 13 yrs. The weather around Durango, CO/Farmington/Bloomfield, NM will be ok in March/Apr. Durango is 1000ft higher than Farmington and you have to go over a high plateau to get there which is where most of the snow will be. Last March Farmington was mostly in the 50-60 daytime and upper 20-30's at night, zero snow. Durango was close to the same (5-10 Degrees difference) with three days of light snow. There may be colder or even warmer weather in 2021. Just watch the forecast. So if you stay south of the CO line and only drive up to CO for day trips you should be ok. US 491 from Gallup (I-40) up to Shiprock (US64) is not closed although it does go through the Reservation which is closed to visitors. Watch for livestock on the road since there are open range areas.