December weather forecastArch, Switzerland
December
Weather in December
December, the first month of the winter in Arch, is still a cold month, with an average temperature varying between -1.5°C (29.3°F) and 4.2°C (39.6°F).Temperature
December witnesses a gentle descent in average high-temperature, descending from November's chilly 8.2°C (46.8°F) to an icy 4.2°C (39.6°F). In Arch, the average nighttime temperature during December is a freezing cold -1.5°C (29.3°F).Humidity
In December, the average relative humidity is 85%.Rainfall
In Arch, in December, it is raining for 14.9 days, with typically 95mm (3.74") of accumulated precipitation. Throughout the year, there are 195.6 rainfall days, and 870mm (34.25") of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall in Arch. In Arch, in December, snow falls for 7.5 days, with typically accumulated 123mm (4.84") of snow. Throughout the year, in Arch, there are 37.6 snowfall days, and 557mm (21.93") of snow is accumulated.Daylight
With an average of 8h and 36min of daylight, December has the shortest days of the year in Arch.On the first day of December in Arch, sunrise is at 07:56 and sunset at 16:42. On the last day of the month, sunrise is at 08:16 and sunset at 16:50 CET.
Sunshine
December has the least sunshine of the year in Arch, with an average of 4.9h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.Note: In December, the UV index of 2 transforms into the following advice:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Arch, Switzerland
- Average high temperature in December: 4.2°C
The warmest month (with the highest average high temperature) is July (23.1°C).
The month with the lowest average high temperature is January (2.7°C).
- Average low temperature in December: -1.5°C
The month with the highest average low temperature is July (11.9°C).
The coldest months (with the lowest average low temperature) are January and February (-2.8°C).
Average pressure in December
Arch, Switzerland
- Average pressure in December: 1021mbar
The month with the highest atmospheric pressure is December (1021mbar).
The month with the lowest atmospheric pressure is April (1015.6mbar).
Average wind speed in December
Arch, Switzerland
- Average wind speed in December: 9.9km/h
The windiest month (with the highest average wind speed) is February (10.2km/h).
The calmest month (with the lowest average wind speed) is August (6.3km/h).
Average humidity in December
Arch, Switzerland
- Average humidity in December: 85%
The month with the highest relative humidity is January (87%).
The months with the lowest relative humidity are April, July and August (79%).
Average rainfall in December
Arch, Switzerland
- Average rainfall in December: 95mm
The wettest month (with the highest rainfall) is June (97mm).
The driest month (with the least rainfall) is September (46mm).
Average rainfall days in December
Arch, Switzerland
- Average rainfall days in December: 14.9 days
The month with the highest number of rainy days is May (21.9 days).
The month with the least rainy days is February (12.3 days).
Average snowfall in December
Arch, Switzerland
- Average snowfall in December: 123mm
The month with the highest snowfall is February (133mm).
The months with the least snowfall are June, July and August (0mm).
Average snowfall days in December
Arch, Switzerland
- Average snowfall days in December: 7.5 days
The month with the highest number of snowfall days is January (9.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Arch, Switzerland
- Average daylight in December: 8h and 36min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in December: 4h and 54min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 4h and 54min).
Average sunshine days in December
Arch, Switzerland
- Average sunshine days in December: 12.5 days
The month with the most sunshine days is October (14.1 days).
The month with the least sunshine days is May (6.7 days).
Average UV index in December
Arch, 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, November and December (UV index 2).
Average cloud cover in December
Arch, Switzerland
- Average cloud cover in December: 49
The months with the most cloud cover are January, February and December (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in December
Arch, Switzerland
- Average visibility in December: 8km
The months with the highest visibility are March, April, July and August (9km).
The months with the lowest visibility are January, February, May, June, September, October, November and December (8km).
