The climate of Lahore in January is cool, pleasant and sunny with a moderate rainfall. The following is a brief description of its temperature and precipitation.
Temperature:
The day time temperatures are around 66 F ( 19 C) at the beginning of the month. By the mid-month they generally drop a degree or two and the thermometer stands at about 64 ( 17 C) at mid-day. By the time January draws to a close, the temperatures rise a little and are approaching 70 F ( 21 C). The mean day temperature for the whole month, therefore, is 66 F (19 C) which is very comfortable for its latitude of 31 N. All stations at or around this latitude are much colder. Teheran, for instance records a day time temp of only 46 F ( 8 C) in the same month.
The night time temperatures are also much milder than the stations located on the same latitude. At the beginning of the month, the temperatures are around 41 F ( 5 C). By mid-month, they are near 34 F ( 2 C).By the time the month is nearing its end, the temperatures increase to 46 F ( 8 C). The average night time temperature for the whole month is therefore 41 F ( 5 C). Again this much milder than other stations situated at or around the same latitude. The night time temperature at Teheran is 30 F ( -1 C) or 11 degrees F colder than that of Lahore.
The main reason of these very mild winter temperatures at Lahore is that the Great Himalayas situated farther north and east obstruct the fiercely cold winds of Central Asia. Whereas in case of Teheran, for instance there is no huge mountain barrier present to check the cold Central Asian wind. This becomes more clear when we see that the all time low temperature at Lahore is 28 F ( -2 C) whereas at Teheran it is 5 F ( -15 C )!
Precipitation:
The precipitation is in the form of rainfall for no snow occurs in Lahore. The average rainfall for the month of January is a little more than an inch ( 25 mm) with two rainy days in the whole month. This rainfall is received through the passage of western disturbance over Lahore which is a gigantic rain bearing system having its origin in the Mediterranean Sea and after crossing Iraq, Iran and Afghanistan reaches Pakistan. By the time it reaches Lahore, it has lost much of its moisture. Some times when the system is strong enough, two or three successive days are rainy but that is not common. Generally the sky is clear of clouds and the relative humidity is low.
In short, the climate of Lahore in January is cool and pleasant with a plenty of sunshine.
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