4 And the fair welkin, foully overcast,
welkin > sky
5 Gan blow up a bitter stormy blast,
Gan > Began to, did
6 With shower and hail so horrible and dread,
dread > dreadful, fearsome
7 That this fair many were compelled at last
many > meinie: company
8 To fly for succour to a little shed,
fly > flee succour > shelter