passenger floor wet

Passenger side floor wet after leaving car in the rain. What would cause this? I checked the winshield but nothing obviously.

Door seal could be bad. I know its getting cold, but place a garden hose on car and run water for awhile. Try to find where its running in at. May be windshield seal or body seam.

Mine was leaking and if you look under the door where the body seams meet, put some caulk or something right there and it should stop it.