By the end of March you ought to be able to avoid/anticipate rough weather. Freezing is the least of my worries on our four southern trips from Maine. We can deal with that. Bad weather sometimes means finding a place to hunker down before the end of March.. It has been a motel a couple of times.. There is one in Wilkes Barre that we are kind of fond of at fifteen degrees.
We may do I 10 this spring at the beginning of April. We have been to Tuscon in April for the magnificent blooming of the saguaro cacti.
2012 Honda Ridgeline
2016 195 RB
Both well used. Now up to 250 nights camping and 70,000 miles on the TT since purchase.