Weather Cheats
Normal Weather:
While playing, press R2, X, L1, L1, L2, L2, L2, Down.
Rainy Weather:
While playing, press R2, X, L1, L1, L2, L2, L2, Circle.
Sunny Weather:
While playing, press R2, X, L1, L1, L2, L2, L2, Triangle.
Overcast Weather:
While playing, press R2, X, L1, L1, L2, L2, L2, Square.
Foggy Weather:
While playing, press R2, X, L1, L1, L2, L2, L2, X.
Sand Storm:
While playing, press Up, Down, L1, L1, L2, L2, L1, L2, R1, R2.
Orange Sky and time stopped at 21.00:
While playing, press Left, Left, L2, R1, Right, Square, Square, L1, L2, X.
Nightand time stopped at 00.00:
While playing, press Square, L1, R1, Right, X, Up, L1, Left, Left.
Those are the weather cheats in Grand theft auto san andreas