Delhi had yesterday recorded season's highest rainfall at 63.1 mm till 5.30 pm and the readings hovered around the same levels for overnight rains.
"The Safdarjung observatory had recorded 63.5 mm rainfall till 8.30 AM while the reading at Palam observatory was 55.6 mm," a MeT official said.
Humidity level was 90 per cent while the minimum temperature was recorded at 25 degree Celsius, two notches below normal for this time of the year.
Commuters again faced a tough time in the morning rush hours.
Traffic was slow at ITO, Dhaula Kuan, Ridge Road, Mayapuri flyover, Madhuban Chowk, Sarai Kale Khan and Nizamuddin area among other areas. Vehicular movement was affected at many places due to water-logging and break down of vehicles.
According to the MeT department, thunderstorm with moderate to heavy rain would occur over many places in northwest, south and southeast NCR and Delhi.
The maximum temperature today is expected to hover around 31 degrees Celsius and the minimum at 25 degrees Celsius.