Summer and winter buttons

Start again with "WT" in the left side of the bottom of the screen, open the main menu and tap "S" button.

You will find next level, with "Summer" and "Winter" buttons.

Inside "Summer" button either of "Winter" button there are three same modes: sunny, cloudy and elements (rain for summer and snow for winter).

Just tap "Rain" button and you'll see the building in the rain.

Or, tap "Snow" button and enjoy the building in snowfall.