December weather forecastRioz, France
December
Weather in December
December, the first month of the winter in Rioz, is also a wintry month, with an average temperature ranging between max 5.6°C (42.1°F) and min 0.5°C (32.9°F).Temperature
With the onset of December, Rioz's climate undergoes a slight change as the average high-temperature moves from a chilly 9.2°C (48.6°F) in November to an icy 5.6°C (42.1°F). Rioz's temperature drops to an average low of 0.5°C (32.9°F) during the nights of December.Humidity
The months with the highest humidity are January and December, with an average relative humidity of 87%.Rainfall
In Rioz, in December, it is raining for 13.5 days, with typically 79mm (3.11") of accumulated precipitation. In Rioz, during the entire year, the rain falls for 173.9 days and collects up to 719mm (28.31") of precipitation.Snowfall
January through March, October through December are months with snowfall in Rioz. In Rioz, in December, snow falls for 3.7 days, with typically accumulated 47mm (1.85") of snow. In Rioz, during the entire year, snow falls for 19 days and aggregates up to 219mm (8.62") of snow.Daylight
December has the shortest days of the year in Rioz, with an average of 8h and 30min of daylight.On the first day of the month, sunrise is at 08:02 and sunset at 16:47. On the last day of December, sunrise is at 08:23 and sunset at 16:54 CET.
Sunshine
The months with the least sunshine in Rioz are January and December, with an average of 4.4h of sunshine.UV index
The months with the lowest UV index in Rioz are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum daily UV index of 2 during December morphs into the following directions:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Rioz, France
- Average high temperature in December: 5.6°C
The warmest month (with the highest average high temperature) is August (23.8°C).
The month with the lowest average high temperature is January (4.2°C).
- Average low temperature in December: 0.5°C
The months with the highest average low temperature are July and August (13°C).
The coldest month (with the lowest average low temperature) is January (-0.8°C).
Average pressure in December
Rioz, France
- Average pressure in December: 1020.8mbar
The month with the highest atmospheric pressure is December (1020.8mbar).
The month with the lowest atmospheric pressure is November (1015.6mbar).
Average wind speed in December
Rioz, France
- Average wind speed in December: 12.8km/h
The windiest month (with the highest average wind speed) is February (13.1km/h).
The calmest month (with the lowest average wind speed) is August (8km/h).
Average humidity in December
Rioz, France
- Average humidity in December: 87%
The months with the highest relative humidity are January and December (87%).
The month with the lowest relative humidity is August (78%).
Average rainfall in December
Rioz, France
- Average rainfall in December: 79mm
The wettest month (with the highest rainfall) is June (97mm).
The driest month (with the least rainfall) is September (32mm).
Average rainfall days in December
Rioz, France
- Average rainfall days in December: 13.5 days
The month with the highest number of rainy days is May (18.8 days).
The month with the least rainy days is January (11.1 days).
Average snowfall in December
Rioz, France
- Average snowfall in December: 47mm
The month with the highest snowfall is January (71mm).
The months with the least snowfall are April, May, June, July, August and September (0mm).
Average snowfall days in December
Rioz, France
- Average snowfall days in December: 3.7 days
The month with the highest number of snowfall days is January (5.9 days).
The months with the least snowfall days are April, May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Rioz, France
- Average daylight in December: 8h and 30min
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: 4h and 24min
The months with the most sunshine are July and August (Average sunshine: 10h and 12min).
The months with the least sunshine are January and December (Average sunshine: 4h and 24min).
Average sunshine days in December
Rioz, France
- Average sunshine days in December: 14.5 days
The month with the most sunshine days is October (16.9 days).
The month with the least sunshine days is June (8.9 days).
Average UV index in December
Rioz, France
- 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
Rioz, France
- Average cloud cover in December: 55
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in December
Rioz, France
- Average visibility in December: 8km
The months with the highest visibility are February, March, April, July and August (9km).
The months with the lowest visibility are January, May, June, September, October, November and December (8km).
