for some reason

I want to open the window.

私は窓を開けたいです

For some reason I want to open the window.

私はなぜか窓を開けたいです

For some reason I want to open the window tonight.

私はなぜか今夜窓を開けたいです

For some reason I want to open the window in my room tonight.

私はなぜか今夜部屋で窓を開けたいです

For some reason I want to open the window alone in my room tonight.

私はなぜか今夜部屋で一人で窓を開けたいです