The problem with passaging the East Coast in March (and November) is the arrival of the equinoctial gales ... or the change between summer and winter weather patterns, and the 'violence of the gales' between these two 'undulating zones'.
These changes between seasons although regularly occurring cant really be predicted nor forecasted for more than a few days out; nor, the intensity or 'mildness' of the equinoctial changes. Its a 'crap shoot'.
You can 'better your chances' by becoming a technical student of the weather and then make your own personal forecasts. An example of such tech textbooks: