India, Oct. 12 -- Heavy rain and thunderstorms made Delhi record its wettest October day in four years on Monday, while the India Meteorological Department (IMD) forecast the onset of the northeast monsoon over the southern peninsula in the next two to three days, followed by several days of rain.

The Safdarjung observatory recorded 41.6 mm of rainfall in the 24 hours till 8.30 am on Monday, the highest October daily total since October 9, 2022, when around 74 mm was recorded.

Among Delhi's five weather stations, the Ridge received the highest rainfall at 49 mm, followed by Safdarjung at 41.6 mm, Lodhi Road at 41.4 mm, Ayanagar at 39 mm and Palam at 31 mm.

The showers brought down the minimum temperature at Safdarjung to 18.7 degrees C...