Answer :
On the first day of winter in the northern hemisphere, if you are at 66 degrees north, you will experience cold temperatures, short daylight hours, and potentially snowfall. The sun will set earlier and the temperatures will drop, often below 0 degrees Celsius (32 degrees Fahrenheit).
This region is well within the Arctic Circle, so you can expect the winter to be cold and dark. During the day, temperatures may not reach above freezing, and in the evening they will drop even further. Snowfall is common and the region will be quite dark, as the sun is much lower in the sky at this time of year. During the winter solstice, the sun may only be visible for a few hours each day in this area.
Temperature in the poles around northern hemisphere is too low for any human settlement, lack of direct sunlight is one of the major reason for this extremely low temperature and harsh climate.
Know more about northern hemisphere here:
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