Delhi and parts of north India woke up to numbing cold with the weather department predicting cold wave conditions to prevail over the next few days. Temperatures have dipped in Punjab, Haryana, Uttar Pradesh, Rajasthan and Delhi over the last week with the onset of a cold wave. In Delhi, the mercury plunged to 5.3 degrees Celsius on Sunday - three notches below normal, while dense fog covered Haryana, Punjab and parts of Rajasthan.