"As per information available till 5 PM today, the toll has risen to 541 (from yesterday's 489)," said a senior official of the state disaster management department.
Since April 15, Nalgonda district has recorded maximum number of 139 deaths, followed by Karimnagar (120), Khammam (95) and Mahabubnagar (42).
Heatwave has claimed 36 lives in Ranga Reddy district followed by 35 in Medak district, 26 in Adilabad, 20 in Warangal, 18 in Nizamabad, and 10 in Hyderabad.
The highest maximum temperature of 47 degree Celsius was recorded at Ramagundam yesterday.
According to MeT department, isolated rains occurred over Telangana yesterday.