The deaths have been reported till today, an official in the disaster management's control room said.
The state government had earlier directed the officials to initiate relief measures to the people.
Chief Minister K Chandrasekhar Rao is scheduled to hold a review with district collectors on April 29 on the drought conditions.
Heat wave conditions are likely to prevail over some parts in several districts in Telangana, the India Meteorological Department (IMD) said.
"Heat wave conditions very likely to prevail over some parts in the districts ofAdilabad, Hyderabad, Karimnagar, Khammam, Mahaboobnagar, Medak, Nalgonda, Nzamabad, Ranga Reddy and Warangal of Telangana," it said in its heat wave warning for next two days.
There has been an "appreciable" fall in maximum temperatures at one or two places. The highest maximum temperature of 44 degrees Celsius was recorded at Adilabad, Medak, Nalgonda, Nizamabad and Ramagundam.