1: Create an Autorun Event in the area in question that you want to have the weather change.
2: Control Variables -> (Select your Single variable) -> Set -> Random -> 0 ~ 100 (put 100 in the second box)
3: Make a Conditional Branch, if the Variable (your Single variable) -> Less than or equal to -> 25
4: In the true case (immediately under the conditional) set the weather to say, rain.
5: In the Else case, do another Conditional Branch, if the Variable is greater than or equal to 75
6: In the true case, set the weather to stormy
7: In the Else case, set the weather to none.
8: Erase Event, so it doesn't keep changing weather on you, but will do this every time you zone into the area.
If you don't want stormy and rainy or whatever, just take out the conditional branch with that particular part in it.
Here's a visual guide:
I realize now I forgot to put the erase event in there, but eh. Just remember to put that in. xD
Hope this helped.
This post has been edited by seliphail: Dec 22 2010, 07:02 AM