Keylong in tribal Lahaul and Spiti district was coldest in the region with minimum temperature at minus 4.1 degree Celsius while Sundernagar, Bhuntar, Manali and Kalpa reeled under severe cold with minimum temperature staying between 2 and 3 deg C.
Solan, Mandi and Una recorded a low of 3.5 deg C, 4.1 deg C, 4.5 deg C, however, the state capital Shimla was hottest during the night with minimum temperature recording at 10.5 deg C, 5.7 notches above normal.
Northwesterly winds are prevailing over the state and a fresh Western Disturbance (WD) as an upper air system is likely to affect the Western Himalayan region from December 7 onwards causing rain or snow, sources in meteorological office said.
Nahan recorded minimum temperature at 10.2 deg C, 2 degree below normal while Palampur and Dharamsla recorded a low of 8.4 deg C.
Una was hottest during the day with maximum temperature measuring at 26 deg C, followed by Sundernagar 23.7 deg C, Nahan 23.5 deg C, Solan 25 deg C and Dharamsala 21.2 deg C, 2 to 5 degrees above normal.
Shimla recorded a high of 20.1 deg C, 7 degree above normal, the Met office said.