He was 84.
Rawat represented the Lansdowne constituency for five consecutive terms in Uttar Pradesh Assembly in undivided UP between 1974 and 1996.
He is survived by four sons and a daughter.
Describing his death as a great loss for the party, state BJP president Ajay Bhatt said he enjoyed a direct contact with people.
State Congress president Kishore Upadhyay said his death was a loss not just for the BJP, but for the entire state.