Here's what I get:

[pick up notes. no chord] There were two
A/ sis-ters
G/ tum tee tu-
A/ um.
G/O the
D/wind and
A/rain.
D/One was dark and the* o-ther was fair.
Em/O the dread-ful*
G/wind and ra--
A/ ain

a * means that the note is dissonant.

Thoughts on this song: The singer on YouTube is going too fast. Even after listening many times, I can't figure out the words that come after 'sisters.' I think it sounds too cheerful and businesslike to be about a drowning.

I'm pretty sure that when this song was sung in the old days, the listeners joined in to sing 'Oh the wind and rain' and also 'O the dreadful wind and rain.' And after a while, a few people would make up a little harmony on those words. That's how we do it here in Kansas City. It helps pass the long, damp nights as we huddle around the fireplaces in our drafty old castles.

It was hard to figure out the note lengths from that recording. I'm not sure I have them right even after trying for a long time.