In Saptari, Rameshwar Dev, 71, of Sitapur-9; Sugawati Yadav, 63, of Gobargada-9 and Lakhiya Devi Sadaya, 73, of Gobargada froze to death on Wednesday.
According to District Police Office, a total of 13 people have died of cold in Saptari.
In Siraha, Phaguni Ram, 60, of Lahan-1, and Santosh Giri, 40, of Asanpur-6, died of hypothermia on Wednesday. Before this, three people had died of cold in Siraha.
On Sunday, Anita Kumari Mahata, 13, of Chandralalpur-6, and two residents of Bheriya and Bhaurkataiya respectively died of cold.
The poor have been hit hard by the cold wave, as they cannot afford warm clothes and sleep on cold floor.
1,523 blankets distributed to cold wave survivors