However, the minimum temperature in the two states and their common capital Chandigarh hovered above normal, the MeT said.
According to a MeT official here, Chandigarh and most places in Punjab and Haryana remained engulfed under heavy fog this morning affecting visibility.
Flights from Chandigarh airport were either re-scheduled or cancelled for the second day today while some trains criss-crossing the region were running hours behind schedule, sources said.
Director of the Chandigarh's MeT Department, Surender Paul said the fog was likely to decrease over the next couple of days.
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Meanwhile, Chandigarh recorded a low of 10.4 degrees Celsius, three notches above normal.
In Punjab, Amritsar registered a low of 9.3 deg C, up four notches while Ludhiana's minimum settled at 10.7 deg C, four above normal. Patiala, too, recorded an above normal low of 10.4 deg C.
Karnal and Hisar in Haryana recorded two notches above normal minimums each at 10.2 deg C and 9.5 deg C.
However, Narnaul had a cold night at 5.5 deg C.