A MeT Department official said that the Western Disturbance was active over North Pakistan and adjoining Jammu and Kashmir and the minimum temperatures had risen in the plains because of the weather system.
Chandigarh today recorded a minimum temperature of 8.6 degrees Celsius, up three notches than normal.
In Haryana, Ambala registered a low of 8.3 deg C, up two notches from normal while Hisar's low settled at 7.3 deg C, up by one notch.
Amritsar in Punjab recorded a low of 3.6 deg C, which was one notch above normal.
Ludhiana's minimum temperature settled at 10.1 deg C, three degrees above normal while Patiala's low settled at 9 deg C, up by two notches.