Heavy rains accompanied by strong winds brought the mercury levels down in the national capital, Delhi, this morning. The city also experienced a strong squall last night which uprooted many trees. According to the Met department, Western Disturbance over northwest Pakistan and neighbourhood and upper air cyclonic circulation over Punjab and neighbourhood are responsible for this drastic change in the weather. After scorching at over 40 degree celsius in the past few days, the city is likely to experience pleasant weather over the weekend. Weatherman predicts rain and thuderstorms to continue till tomorrow. The mercury is likely to oscillate between 37 and 27 degrees today.In Uttarakhand, the weather turned cold at some places including Nainital following rain accompanied with hailstorm. According to District Magistrate of Uttarkashi, Hemlata Bhondial, one person was killed in Mori area due to the storm. As per report, some houses were damaged due to inclement weather in Pithouragarh. Met department predicts, rain may occur at some places whereas snow fall at higher reaches in the coming 24 hours. Mercury dropped by few notches as rains lashed parts of Punjab and Haryana. Heavy showers lashed Chandigarh, the joint capital of Punjab and Haryana, in the wee hours. Ambala, Gurgaon, Sonepat, Panchkula and Panipat in Haryana also received heavy showers. After the rains, cool breeze made the weather pleasant in many places.