December weather forecastBy, Norway

December

Weather in December

The first month of the winter, December, is still a freezing cold month in By, Norway, with an average temperature ranging between min -3.4°C (25.9°F) and max -0.1°C (31.8°F).

Temperature

The commencement of December notes an average high-temperature of a freezing cold -0.1°C (31.8°F), exhibiting little difference from the previous month. By's nocturnal readings in December exhibit minimal variation from the daytime temperatures, averaging at a still subzero cold -3.4°C (25.9°F).

Humidity

The average relative humidity in December in By, Norway, is 85%.

Rainfall

The month with the most rainfall in By, Norway, is December, when the rain falls for 13.8 days and typically aggregates up to 103mm (4.06") of precipitation.

Snowfall

January through May, October through December are months with snowfall. In By, in December, snow falls for 15.9 days, with typically accumulated 294mm (11.57") of snow. In By, during the entire year, snow falls for 88.5 days and aggregates up to 1596mm (62.83") of snow.

Daylight

With an average of 4h and 30min of daylight, December has the shortest days of the year.
On the first day of December in By, sunrise is at 09:35 and sunset at 14:39. On the last day of the month, sunrise is at 10:07 and sunset at 14:35 CET.

Sunshine

The month with the least sunshine is December, with an average of 1.5h of sunshine.

UV index

February, March and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: A daily maximum UV index of 1 in December translates into the following instructions:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. To cut down UV radiation exposure by about half, sport a wide-brim hat. Take careful note! The UV radiation of the Sun can be nearly doubled by snow reflection.

Frequently asked questions

During December, By experiences an average high-temperature of -0.1°C (31.8°F) and a low-temperature of -3.4°C (25.9°F).

The average relative humidity in December in By is 85%.

The month with the most rainfall in By, Norway, is December, when the rain falls for 13.8 days and typically aggregates up to 103mm (4.06") of precipitation.

In By, in December, during 13.8 rainfall days, 103mm (4.06") of precipitation is typically accumulated.

In By, Norway, during December, snow falls for 15.9 days and regularly aggregates up to 294mm (11.57") of snow.

December has the shortest days of the year in By, Norway, with an average of 4h and 30min of daylight.

The average day length in December in By is 4h and 28min.

In December, on the first day of the month, sunrise is at 09:35 and sunset at 14:39. On the last day of the month, in By, sunrise is at 10:07 and sunset at 14:35 CET.

The month with the least sunshine in By, Norway, is December, with an average of 1.5h of sunshine.

In December, the average sunshine duration in By, Norway, is 1.5h.

February, March and December, with an average maximum UV index of 1, are months with the lowest UV index.

In By, Norway, the average daily maximum UV index in December is 1. A UV Index value of 2, and less, symbolizes a minimal hazard to health from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
By, Norway

  • Average high temperature in December: -0.1°C

The warmest month (with the highest average high temperature) is July (17°C).
The month with the lowest average high temperature is January (-1.3°C).

  • Average low temperature in December: -3.4°C

The month with the highest average low temperature is July (10.1°C).
The coldest month (with the lowest average low temperature) is February (-5°C).

Average pressure in December
By, Norway

  • Average pressure in December: 1003mbar

The month with the highest atmospheric pressure is May (1014.4mbar).
The month with the lowest atmospheric pressure is December (1003mbar).

Average wind speed in December
By, Norway

  • Average wind speed in December: 15.5km/h

The windiest month (with the highest average wind speed) is January (16.6km/h).
The calmest month (with the lowest average wind speed) is July (10.2km/h).

Average humidity in December
By, Norway

  • Average humidity in December: 85%

The month with the highest relative humidity is February (89%).
The month with the lowest relative humidity is May (75%).

Average rainfall in December
By, Norway

  • Average rainfall in December: 103mm

The wettest month (with the highest rainfall) is December (103mm).
The driest month (with the least rainfall) is June (46mm).

Average rainfall days in December
By, Norway

  • Average rainfall days in December: 13.8 days

The month with the highest number of rainy days is October (19.7 days).
The month with the least rainy days is February (10.2 days).

Average snowfall in December
By, Norway

  • Average snowfall in December: 294mm

The month with the highest snowfall is February (339mm).
The months with the least snowfall are June, July, August and September (0mm).

Average snowfall days in December
By, Norway

  • Average snowfall days in December: 15.9 days

The month with the highest number of snowfall days is March (18 days).
The months with the least snowfall days are July, August and September (0 days).

Average daylight in December /
Average sunshine in December
By, Norway

  • Average daylight in December: 4h and 30min

The month with the longest days is June (Average daylight: 20h and 42min).
The month with the shortest days is December (Average daylight: 4h and 30min).

  • Average sunshine in December: 1h and 30min

The month with the most sunshine is July (Average sunshine: 9h and 42min).
The month with the least sunshine is December (Average sunshine: 1h and 30min).

Average sunshine days in December
By, Norway

  • Average sunshine days in December: 7.5 days

The month with the most sunshine days is September (10.9 days).
The month with the least sunshine days is March (7.2 days).

Average UV index in December
By, Norway

  • Average UV index in December: 1

The months with the highest UV index are June and July (UV index 4).
The months with the lowest UV index are February, March and December (UV index 1).

Average cloud cover in December
By, Norway

  • Average cloud cover in December: 63

The month with the most cloud cover is March (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 52).

Average visibility in December
By, Norway

  • Average visibility in December: 8km

The months with the highest visibility are May, June, July, August, September, October and November (9km).
The months with the lowest visibility are January, February, March, April and December (8km).