How to set it in CF to have weather effect?

The weather cannot be adjusted. Only stand-alone FPS games have this feature.

CrossFire (CF) is a first-person shooter game developed by Smile Gate and operated by tencent games in China.

The game tells the story of the global risk and the black list duel between the two major mercenary groups in the world. There are many modes in the game, team mode, team game, blasting mode, ghost mode and so on. The instant joining system in the form of "lack of people to make up" was introduced.

Defender:

As early as the establishment of Defender Mercenary Company, it began to openly recruit retired players from various famous special forces. This mercenary company serves a powerful country in the name of maintaining peace. They claim that they have the most just position. If fighting goes against their beliefs, no matter how much money they have, they will never be moved.

However, the defenders never reveal the details of every battle they fought, and even don't want to say more to their internal members. Therefore, their declared "just" action has been questioned by more and more people.

Soon, the outside world began to accuse them of being tools of powerful countries and consortia. There are even rumors that many excellent players leave the company because what they did in Defender Mercenary Company violated their ideals.

Mercenary "defenders" who manipulate the interests of the western world and "infiltrators" legions entrusted by third world countries, including weak countries. Under the position that small countries oppose the manipulation of the world pattern by big countries, these two mercenary armies are fighting all over the world.