The film, also starring Sonam Kapoor, marks the directorial debut of the actor's father Pankaj.
Pankaj told Hindustan Times: "Mausam is about seasons of love and not exactly about the weather.
"However, the marketing team came up with this unique idea and everyone loved it. We are working on getting the required permissions for it now. I'm sure it will be interesting."
Shahid will officially become an employee for the day at India's Meteorological Department.
Mausam, which centres on a love affair between a Punjabi air force pilot and a Kashmiri woman, has already faced controversy.
Kapoor learnt his father's native language specifically for the role.
One of the trailers for the film could be banned under animal welfare laws because it features a cow, unless the producers receive clearance from the Animal Welfare Board.
Shahid has already held one open screening for his fans to get a "first look" at the release.
