Rainfall activity in Delhi is likely to pick up from today, with the MeT office forecasting moderate rain or thudershowers in the city  the next three days. According to the India Meteorological Department (IMD), the monsoon trough is likely to "continue to shift gradually northwards", leading to an increase in rainfall activity over north India.


The Safdarjung Observatory, Delhi's primary weather station, has recorded 232.8 mm of rainfall so far in July against a normal of 183.3 mm.


It has logged 257.3 mm of precipitation against a normal of 257.4 mm since June 1 when the monsoon season starts.


The observatory recorded a minimum temperature of 26.7 degrees Celsius on Wednesday. The maximum temperature settled at 34.6 degrees Celsius, normal for this time of the year.


The weather bureau said the maximum temperature is likely to remain below 34 degrees Celsius for the next six days.


Meanwhile, the Himachal Pradesh meteorological department on Wednesday said heavy rain is expected in the state over the next few days which may lead to disruption of essential services and trigger flash floods.


The ongoing rainfall activity is very likely to increase from July 28 to 30. Moderate to heavy rainfall associated with one or two spells of very heavy rain in parts of Shimla, Bilaspur, Sirmaur, Solan, Una, Hamirpur, Kangra, Mandi, Kullu, Chamba and adjoining areas is expected during the next 48-72 hours with peak rainfall in the next 36-48 hours, the Met department said.


Moderate rainfall with isolated spells of heavy rainfall is likely in parts of Lahaul-Spiti and Kinnaur during the next 48 hours. Flash floods are feared in parts of the two districts during this period, it said.