Connecting to the weather is a rather important part of weather manipulation and frankly without it you are doomed to fail in weather manipulation.
So exactly how does one do so?
1 - Get into a basic meditative state.
2 - Eirect your attwntion to say a cloud, or anything weather related.
3 - Feel the energy of the cloud or such, very much just scanning it in a sense.
4 - Doing this, I now want you to will some of your consciousness into it.. You should if done right feel a vague sense of it being a part of you.
Try to maintain this as long as you can, and if you don't know how to do step 4, it may be a good idea to practice more awareness training.