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
Weather in December
Temperature
The shift from November to December coincides with a small decrease in the average high-temperature, down to a wintry 2.8°C (37°F) from a frosty 6.7°C (44.1°F). In Rietheim, December nights experience a modest descent in temperature from daily peaks, cooling down to an average of -2.1°C (28.2°F).Humidity
In December, the average relative humidity is 89%.Rainfall
In Rietheim, Switzerland, in December, it is raining for 10.4 days, with typically 83mm (3.27") of accumulated precipitation. In Rietheim, Switzerland, during the entire year, the rain falls for 177.7 days and collects up to 909mm (35.79") of precipitation.Snowfall
Months with snowfall are January through May, October through December. The month with the most snowfall in Rietheim is December, when snow falls for 13.3 days and typically aggregates up to 291mm (11.46") of snow.Daylight
The month with the shortest days is December, with an average of 8h and 30min of daylight.On the first day of the month, sunrise is at 07:54 and sunset at 16:37. On the last day of December, sunrise is at 08:14 and sunset at 16:45 CET.
Sunshine
The months with the least sunshine are January and December, with an average of 3.7h of sunshine.UV index
In December, the average daily maximum UV index in Rietheim, Switzerland, is 2. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. UV radiation from the Sun is most dangerous during midday; take precautions and seek shade. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Frequently asked questions
How cold is December in Rietheim?
What is the average humidity in December in Rietheim?
How much does it rain in Rietheim in December?
What is the snowiest month in Rietheim?
How many days does it snow in December in Rietheim?
What is the month with the shortest days in Rietheim?
How many hours of daylight does Rietheim have in December?
What time are sunrise and sunset in December in Rietheim?
What is the month with the least sunshine in Rietheim?
How long on average sun shines in December in Rietheim?
What is the UV index reading in December in Rietheim?
Average temperature in December
Rietheim, Switzerland
- Average high temperature in December: 2.8°C
The warmest month (with the highest average high temperature) is July (21.9°C).
The month with the lowest average high temperature is January (1.5°C).
- Average low temperature in December: -2.1°C
The months with the highest average low temperature are July and August (11.3°C).
The coldest months (with the lowest average low temperature) are January and February (-3.8°C).
Average pressure in December
Rietheim, Switzerland
- Average pressure in December: 1020.5mbar
The month with the highest atmospheric pressure is December (1020.5mbar).
The month with the lowest atmospheric pressure is November (1015.6mbar).
Average wind speed in December
Rietheim, Switzerland
- Average wind speed in December: 9.8km/h
The windiest month (with the highest average wind speed) is March (10.2km/h).
The calmest month (with the lowest average wind speed) is August (7.2km/h).
Average humidity in December
Rietheim, Switzerland
- Average humidity in December: 89%
The month with the highest relative humidity is January (92%).
The months with the lowest relative humidity are April and July (80%).
Average rainfall in December
Rietheim, Switzerland
- Average rainfall in December: 83mm
The wettest month (with the highest rainfall) is August (109mm).
The driest month (with the least rainfall) is September (51mm).
Average rainfall days in December
Rietheim, Switzerland
- Average rainfall days in December: 10.4 days
The month with the highest number of rainy days is May (22.3 days).
The month with the least rainy days is February (6.7 days).
Average snowfall in December
Rietheim, Switzerland
- Average snowfall in December: 291mm
The month with the highest snowfall is December (291mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Rietheim, Switzerland
- Average snowfall days in December: 13.3 days
The month with the highest number of snowfall days is January (15.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Rietheim, Switzerland
- Average daylight in December: 8h and 3min
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 30min).
- Average sunshine in December: 3h and 4min
The months with the most sunshine are July and August (Average sunshine: 9h and 24min).
The months with the least sunshine are January and December (Average sunshine: 3h and 42min).
Average sunshine days in December
Rietheim, Switzerland
- Average sunshine days in December: 12.4 days
The month with the most sunshine days is October (15.6 days).
The month with the least sunshine days is May (7.2 days).
Average UV index in December
Rietheim, 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 and November (UV index 1).
Average cloud cover in December
Rietheim, Switzerland
- Average cloud cover in December: 63
The month with the most cloud cover is January (Cloud cover 66).
The month with the least cloud cover is August (Cloud cover 40).
Average visibility in December
Rietheim, Switzerland
- Average visibility in December: 7km
The months with the highest visibility are April, May, June, July, August and September (8km).
The months with the lowest visibility are January and February (6km).
Rietheim, Switzerland
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