Weather control on a local level has been available in a limited sense for some time.. the Soviets/Russians sprayed some compounds into the skies above a coming military parade in order to exclude the possibility of rain - and probably still do so.
It's possible that with a little extra development of such technology - it can be put to operational military use too. Not only stopping rains in certain locations at certain times, but encouraging them too. Could be used to lower visibility/sound distance and provide cover for your special forces operations, or be used to hinder the movements of enemy formations while keeping the forces on your side dry, etc..
When it comes to generating or stopping storms and such - that would require a systematic approach as storms are formed over huge geographical areas and are related to atmospheric pressures, ocean currents and plenty of other factors that can't be localized at all.
Doing something like this would also require cupious amounts of energy.
Long story short - won't be possible for quite a while yet.
That is exactly what i said before or do i have the prestige being back on your ignore list?
The compound they use is Silveroxid and AFAIK till this date lot of countries use it not just Russia, germany use it from time to time, US definetley use it for same purpose. Silveroxid and alike can be used for this exact two purpose which they are used since years, dispersing cloud formations or amplyifing the rain/snow (cloud seeding).