December weather forecastTretten, Norway
December
Weather in December
The first month of the winter, December, is still a freezing cold month in Tretten, Norway, with temperature in the range of an average low of -12.1°C (10.2°F) and an average high of -6.6°C (20.1°F).Temperature
The arrival of December correlates with a minor temperature reduction, down from November's subzero cold -2.7°C (27.1°F) to a still freezing cold -6.6°C (20.1°F). In the month of December, an average of -12.1°C (10.2°F) marks the low-temperature.Humidity
In Tretten, the average relative humidity in December is 92%.Rainfall
In Tretten, in December, it is raining for 5.2 days, with typically 14mm (0.55") of accumulated precipitation. Throughout the year, there are 122 rainfall days, and 286mm (11.26") of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. December is the month with the most snowfall. Snow falls for 13.5 days and accumulates 75mm (2.95") of snow.Daylight
The month with the shortest days is December, with an average of 5h and 36min of daylight.On the first day of the month, sunrise is at 09:06 and sunset at 15:09. On the last day of December, sunrise is at 09:34 and sunset at 15:09 CET.
Sunshine
December has the least sunshine of the year, with an average of 2.3h of sunshine.UV index
January, February, October and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for the average person.Note: The daily high UV index of 1 in December translates into this advice:
Many can withstand an hour in the sun without burning, yet children must always have protection against sunlight. To guard against the harmful effects of the Sun, minimize exposure during midday. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Tretten, Norway
- Average high temperature in December: -6.6°C
The warmest month (with the highest average high temperature) is July (16.8°C).
The month with the lowest average high temperature is January (-7.5°C).
- Average low temperature in December: -12.1°C
The month with the highest average low temperature is July (6.8°C).
The coldest month (with the lowest average low temperature) is January (-13.7°C).
Average pressure in December
Tretten, Norway
- Average pressure in December: 1007.2mbar
The month with the highest atmospheric pressure is May (1014.7mbar).
The month with the lowest atmospheric pressure is December (1007.2mbar).
Average wind speed in December
Tretten, Norway
- Average wind speed in December: 9.9km/h
The windiest month (with the highest average wind speed) is June (10.9km/h).
The calmest months (with the lowest average wind speed) are April and November (8.8km/h).
Average humidity in December
Tretten, Norway
- Average humidity in December: 92%
The months with the highest relative humidity are January and February (93%).
The month with the lowest relative humidity is June (70%).
Average rainfall in December
Tretten, Norway
- Average rainfall in December: 14mm
The wettest month (with the highest rainfall) is July (56mm).
The driest month (with the least rainfall) is January (11mm).
Average rainfall days in December
Tretten, Norway
- Average rainfall days in December: 5.2 days
The month with the highest number of rainy days is July (19.3 days).
The month with the least rainy days is January (3.5 days).
Average snowfall in December
Tretten, Norway
- Average snowfall in December: 75mm
The month with the highest snowfall is December (75mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Tretten, Norway
- Average snowfall days in December: 13.5 days
The month with the highest number of snowfall days is January (14.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Tretten, Norway
- Average daylight in December: 5h and 36min
The month with the longest days is June (Average daylight: 19h and 12min).
The month with the shortest days is December (Average daylight: 5h and 36min).
- Average sunshine in December: 2h and 18min
The month with the most sunshine is June (Average sunshine: 11h and 30min).
The month with the least sunshine is December (Average sunshine: 2h and 18min).
Average sunshine days in December
Tretten, Norway
- Average sunshine days in December: 16.1 days
The months with the most sunshine days are January and October (16.8 days).
The month with the least sunshine days is July (8.9 days).
Average UV index in December
Tretten, Norway
- Average UV index in December: 1
The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are January, February, October and December (UV index 1).
Average cloud cover in December
Tretten, Norway
- Average cloud cover in December: 58
The months with the most cloud cover are January and February (Cloud cover 61).
The month with the least cloud cover is June (Cloud cover 49).
Average visibility in December
Tretten, Norway
- Average visibility in December: 7km
The months with the highest visibility are June and July (9km).
The months with the lowest visibility are January, March, April and November (6km).
