Light to heavy rain is likely in Delhi, Haryana and Punjab from Thursday night, as per the weather agencies.
Parts of Delhi witnessed scattered drizzles on Thursday with Aya Nagar recording 10.1 mm of precipitation, according to the India Meteorological Department (IMD).
Subsequently, the mercury fell to 29 degrees Celsius on Thursday afternoon as against the prediction of maximum temperature of 39.4 degrees.
IMD chief K.J. Ramesh told : "We expect monsoon to come to Delhi in the next two-three days, around Sunday."
As per the latest data, monsoon winds have progressed till Rajasthan and parts of Uttar Pradesh.
According to private forecaster Skymet, the monsoon can reach Delhi on Saturday as well.
"There are always rains for two-three days before monsoon hits. Areas around Delhi such as Faridabad, Gurugram have received good rainfall on Thursday. The monsoon can reach Delhi on Saturday," said Mahesh Palawat, Director at Skymet.
A thunderstorm is also expected in Haryana and Punjab in the next two days.
During the last 24 hours, moderate to heavy rain occurred over Madhya Pradesh, southeast Rajasthan and parts of Uttarakhand and Maharashtra.
Due to the likely westward movement of a low pressure system, widespread rain is expected in Odisha, Chhattisgarh, Telangana, Maharashtra's Vidarbha region and east Madhya Pradesh during the next two-three days, as per the IMD.
Goa, Konkan and Marathwada in Maharashtra, Gujarat, east Rajasthan and west Madhya Pradesh are very likely to witness enhanced rain activity in the next three-four days.
( With inputs from IANS )