Watched the 1984 movie yesterday. Seemed really rused any no where near good as the modern one. But is that how book 1 ends with the weather scene?
No. It actually makes no sense and Herbert reportedly didn't like that ending. In fact, if it rained on Arrakis, all the worms would be killed and spice production would stop as water is poisonous to the worms, but it's a dramatic ending that implies Paul has turned the desert into a lush heaven with rain. IIRC the ending of the first book is Paul deposing the Emperor and taking over at the start of the Fremen jihad after he takes back the city of Arrakeen.
The whole movie is a bit of a mixed bag, trying to tell a story that was considered unfilmable (and mostly was in the 80's), long before the VFX capabilities we have now. For example, the personal shield effects were pretty much done by hand, frame by frame and took a very long time.
It was Lynch's first big budget film, and he was getting so much grief and contradicting pull from the studio, producers, and everyone else involved that it became a mess of ideas (including his own). After this experience, he said he would never do another big budget studio movie, and I don't think he has in all the years since. The was a rumoured four hour plus rough cut that was shown to the crew, there was a theatrical cut, a longer directors cut, and a TV cut inbetween with scenes that were in neither.
When you consider what was going on with the production and how much was cut out (compared to the new version that is probably going to be about five hours across two films just to get to the end of the first book), it's no wonder the Lynch version wasn't well received and has aged quite poorly.
From IMDB:
David Lynch, director of the previous
Dune (1984), stated that he has "zero interest in Dune (2021)". He cited that his issues with the new movie have nothing to do with director
Denis Villeneuve but with his own painful memories of making the 1984 version: "Because it was a heartache for me. It was a failure and I didn't have final cut. I've told this story a billion times. It's not the film I wanted to make. I like certain parts of it very much - but it was a total failure for me."