Temperatures fell to a minimum for the day of 4.8C while the maximum temperature in the city was down 11 degrees at 9.8C.

BBC: Delhi shivers on coldest day for 44 years

Crops in the northern grain belt, notably wheat, are near their maximum tolerance to heat, and so are vulnerable to short-term blasts of higher temperatures.

ECONOMIST: India��s climate: Monsoon, or later | The