Nice translations, you two! The sentences do seem a little "too bookish" though for something that a person would say spontaneously. How about "Such a downpour today! It's been a while since I've felt the rain fall so freely."

what a day washed by so heavy a raining, what a good length of time didn't sense the delight with so much soul.

It's raining heavily. It gives me a really good feeling that I haven't experenced for a long time!