This was a proposal 12 years ago.
The US Air Force took down the Project 2025 site in August 2005 (excerpts):

>"In the United States, weather-modification will likely become a part of national security policy with both domestic and international applications."

>"In 1957, the president’s advisory committee on weather control explicitly recognized the military potential of weather modification, warning in their report that it could become a more important weapon than the atom bomb."

>"In the broadest sense, weather-modification can be divided into two major categories: suppression and intensification of weather patterns. In extreme cases, it might involve the creation of completely new weather patterns, attenuation or control of severe storms, or even alteration of global climate on a far-reaching and/or long-lasting scale."

>"Technology advancements in five major areas are necessary for an integrated weather-modification capability: (1) advanced nonlinear modeling techniques, (2) computational capability, (3) information gathering and transmission, (4) a global sensor array, and (5) weather intervention techniques. Some intervention tools exist today and others may be developed and refined in the future."

>"Current demographic, economic, and environmental trends will create global stresses that provide the impetus necessary for many countries or groups to turn this weather-modification ability into a capability. Achieving such a highly accurate and reasonably precise weather-modification capability in the next 30 years will require overcoming some challenging but not insurmountable technological and legal hurdles."

Project 2025, Weather as a Force Multiplier: Owning the Weather in 2025, US Air Force, 1996