At the same time, IMD said the maximum temperatures were very likely to be around 39 degrees Celsius in Palakkad, around 38 degrees Celsius in Kollam, Thrissur and Kozhikode, around 37 degrees Celsius in Alappuzha, Kottayam, Pathanamthitta and Kannur districts and around 36 degrees Celsius in Thiruvananthapuram, Ernakulam, Malappuram and Kasaragod districts from May 4 to May 6.