Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
December
Weather in December
Temperature
As November makes way for December, Greppen's average high-temperature eases from a chilly 7.8°C (46°F) to an icy 3.4°C (38.1°F). In Greppen, the December nights cool down to an average low of -2.7°C (27.1°F).Humidity
The average relative humidity in December in Greppen is 83%.Rainfall
In December, in Greppen, Switzerland, the rain falls for 13.9 days. Throughout December, 89mm (3.5") of precipitation is accumulated. Throughout the year, in Greppen, there are 186.8 rainfall days, and 981mm (38.62") of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Greppen, during December, snow falls for 6.5 days and regularly aggregates up to 148mm (5.83") of snow. Throughout the year, there are 35.5 snowfall days, and 692mm (27.24") of snow is accumulated.Daylight
December has the shortest days of the year in Greppen, with an average of 8h and 36min of daylight.On the first day of December, sunrise is at 07:51 and sunset at 16:39. On the last day of the month, sunrise is at 08:12 and sunset at 16:46 CET.
Sunshine
December has the least sunshine of the year, with an average of 5.4h of sunshine.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: In December, the average maximum UV index of 2 translates into the following recommendations:
Despite the majority tolerating prolonged sun exposure, those with sensitive skin, infants, and children demand continual protection. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is December cold in Greppen?
What is the average humidity in December in Greppen?
How many days does it rain in December in Greppen?
How many days does it snow in December in Greppen?
What is the month with the shortest days in Greppen?
How many hours of daylight does Greppen have in December?
What time are sunrise and sunset in December in Greppen?
What is the month with the least sunshine in Greppen?
How many hours of sunshine does Greppen have in December?
What are the months with the lowest UV index in Greppen?
What is the UV index reading in December in Greppen?
Average temperature in December
Greppen, Switzerland
- Average high temperature in December: 3.4°C
The warmest month (with the highest average high temperature) is August (22.1°C).
The month with the lowest average high temperature is January (2.2°C).
- Average low temperature in December: -2.7°C
The month with the highest average low temperature is August (10.9°C).
The coldest month (with the lowest average low temperature) is February (-4.9°C).
Average pressure in December
Greppen, Switzerland
- Average pressure in December: 1020.9mbar
The month with the highest atmospheric pressure is December (1020.9mbar).
The month with the lowest atmospheric pressure is April (1015.6mbar).
Average wind speed in December
Greppen, Switzerland
- Average wind speed in December: 8.3km/h
The windiest month (with the highest average wind speed) is December (8.3km/h).
The calmest month (with the lowest average wind speed) is August (6.2km/h).
Average humidity in December
Greppen, Switzerland
- Average humidity in December: 83%
The months with the highest relative humidity are January and February (86%).
The months with the lowest relative humidity are July and August (77%).
Average rainfall in December
Greppen, Switzerland
- Average rainfall in December: 89mm
The wettest month (with the highest rainfall) is July (121mm).
The driest month (with the least rainfall) is September (52mm).
Average rainfall days in December
Greppen, Switzerland
- Average rainfall days in December: 13.9 days
The month with the highest number of rainy days is May (21.5 days).
The month with the least rainy days is October (11.2 days).
Average snowfall in December
Greppen, Switzerland
- Average snowfall in December: 148mm
The month with the highest snowfall is February (169mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Greppen, Switzerland
- Average snowfall days in December: 6.5 days
The month with the highest number of snowfall days is February (9.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Greppen, Switzerland
- Average daylight in December: 8h and 4min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in December: 5h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 5h and 24min).
Average sunshine days in December
Greppen, Switzerland
- Average sunshine days in December: 12.9 days
The month with the most sunshine days is October (18.4 days).
The month with the least sunshine days is June (7.3 days).
Average UV index in December
Greppen, Switzerland
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Greppen, Switzerland
- Average cloud cover in December: 42
The month with the most cloud cover is February (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
Greppen, Switzerland
- Average visibility in December: 8km
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (8km).
The month with the lowest visibility is January (7km).
