Kerry was scheduled to visit the Gauri Shankar temple, Jama Masjid and Gurdwara Sisganj Sahib in the old Delhi area around 11 AM today.
"The visit had to be cancelled due to heavy rains in Delhi," sources in the US Embassy said.
Kerry, who is on a three-day-visit to India, was supposed to visit the sites yesterday itself but it was postponed.
The US leader has had a difficult time with the city's traffic since he landed on Monday night.