The parent story is flawed in many ways:

1) The title of the story is misleading as there have been no official predictions for snowfall in Delhi in the coming days or in general.

2) The story quotes in the narrative that :
" Delhi got down to 0 degrees Celcius in past few days", which is factually incorrect.

Quoting the past 14-days weather data of Delhi here to support this:

https://www.timeanddate.com/weather/india/new-delhi/historic

https://www.accuweather.com/en/in/delhi/202396/december-weather/202396

3) The picture used in the story is of Feb 2019 when hailstorms were reported in the NCR region and several such pics got viral.

Source: https://www.ndtv.com/india-news/delhi-weather-hailstorm-rain-in-delhi-ncr-noida-temperature-at-17-degrees-1990042