Bhubaneswar: Extreme Heat Ahead In five days, the heat will become severe. Mercury levels in the state will reach 40°C. Temperature will rise by another 3 to 5 degrees. While daytime temperatures are rising, nighttime temperatures are decreasing. In interior Odisha, temperatures will remain above 40°C between 12th and 16th. Some areas in coastal Odisha may reach 38°C.