How to change the weather in Pokemon Black and White

Crow, for your own good, there is no way to change the weather, only the seasons!

Spring on January, May, and September; summer on February, June, and October; autumn on March, July, and November; winter on April, August, and December!

If you want to modify the black and white game season: just modify the computer time directly, change the corresponding month, and the emulator time will be synchronized with the computer time!