Only if there is water vapor to begin with. And why should we try to change it? It is a function of a self-regulating system and altering it is just asking for problems.
For instance, flooding an engine with gas doesn't make it run better.
The second half of the rain cycle is already heavily managed. Very little fresh water makes it back to the sea without man deciding when, where, and in what quantity. Without that management Earth couldn't support 7 billion humans. Starting to manage the first half of the cycle isn't that much of a leap. The great thing about cloud management is most effects are local. If one country wants to live in the stone age they can. If another country wants to populate their deserts they can.