Base observatory of Delhi at Safdarjung recorded a minimum temperature of 13.6°C today, about 2°C below the normal. This is the lowest temperature so far after the withdrawal of monsoon this year. The lowest temperature of 13°C was recorded at Ayanagar. Other observatories also measured minimum temperature with in +/- 0.5°C of the average of 14°C.
November 2021 is expected to clock lower than normal temperatures on many days. Average temperature for November during 1st week is about 15°C and reach nearly 11°C at the fag end of the month. Persisting La Nina conditions invariably stretch the lower range of temperature during winter months. Last year also, La Nina conditions had brought early flavor of winter and resulted the mean minimum temperature of 10.2°C in November. This was the lowest mean minimum in the last 71 years. Prior to this, lowest mean minimum of 10.2°C in November was recorded in 1949. The average mean minimum temperature of Delhi for November stands at 12.9°C.
Year 2020 also had the distinction of registering single digit minimum temperature on record number of 8 days. Also, the month recorded minimum of 6.3°C on 23rd Nov 2020, which was the lowest minimum since Nov 2003, when the mercury had plunged to 6.1°C. The month also had the milestone of observing 4 cold wave days ( 03rd, 20th, 23rdand 24thNov).
Earlier, 1930’s had the record of measuring lowest minimum temperature in the month of November. Hat trick of single digit mean minimum temperature was registered between 1930-40.
The minimum temperature of Delhi is not likely to drop further for the next 48hr and rather this may rise about 1-2°C. A cyclonic circulation over border areas of North Rajasthan and Punjab, as an offshoot of western disturbance in the hills, will cause reversal in the wind pattern over Delhi. Predominantly easterly winds will result rise in temperature for 2 days and drop thereafter again. With this change, sky condition may turn partly cloudy for sometime but no rain is expected for the next 7 days.