December weather forecastRontalon, France
December
Weather in December
December, the first month of the winter in Rontalon, is also a frosty month, with an average temperature fluctuating between 6.7°C (44.1°F) and 1.5°C (34.7°F).Temperature
Rontalon's December weather features a light decline in high-temperatures, reducing from a cool 10.4°C (50.7°F) in November to a frosty 6.7°C (44.1°F). Rontalon, during December, witnesses an average low-temperature of 1.5°C (34.7°F).Humidity
December is the most humid month in Rontalon, with an average relative humidity of 85%.Rainfall
In Rontalon, France, in December, it is raining for 16 days, with typically 68mm (2.68") of accumulated precipitation. Throughout the year, there are 191.8 rainfall days, and 744mm (29.29") of precipitation is accumulated.Snowfall
Months with snowfall in Rontalon are January through March, October through December. In Rontalon, during December, snow falls for 4.2 days and regularly aggregates up to 35mm (1.38") of snow. Throughout the year, there are 19.4 snowfall days, and 149mm (5.87") of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 8h and 48min of daylight.On the first day of the month, sunrise is at 08:02 and sunset at 16:59. On the last day of December, in Rontalon, France, sunrise is at 08:21 and sunset at 17:07 CET.
Sunshine
The average sunshine in December is 4.7h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The UV index of 2 during December leads to these advisories:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Rontalon, France
- Average high temperature in December: 6.7°C
The warmest month (with the highest average high temperature) is August (26.1°C).
The month with the lowest average high temperature is January (5.4°C).
- Average low temperature in December: 1.5°C
The months with the highest average low temperature are July and August (14.8°C).
The coldest month (with the lowest average low temperature) is January (0.2°C).
Average pressure in December
Rontalon, France
- Average pressure in December: 1021.3mbar
The month with the highest atmospheric pressure is December (1021.3mbar).
The month with the lowest atmospheric pressure is April (1015.4mbar).
Average wind speed in December
Rontalon, France
- Average wind speed in December: 10.7km/h
The windiest month (with the highest average wind speed) is February (12.1km/h).
The calmest month (with the lowest average wind speed) is August (8.5km/h).
Average humidity in December
Rontalon, France
- Average humidity in December: 85%
The month with the highest relative humidity is December (85%).
The month with the lowest relative humidity is August (70%).
Average rainfall in December
Rontalon, France
- Average rainfall in December: 68mm
The wettest month (with the highest rainfall) is November (83mm).
The driest month (with the least rainfall) is September (41mm).
Average rainfall days in December
Rontalon, France
- Average rainfall days in December: 16 days
The month with the highest number of rainy days is May (19.8 days).
The month with the least rainy days is September (12.1 days).
Average snowfall in December
Rontalon, France
- Average snowfall in December: 35mm
The months with the highest snowfall are January and February (40mm).
The months with the least snowfall are April, May, June, July, August and September (0mm).
Average snowfall days in December
Rontalon, France
- Average snowfall days in December: 4.2 days
The month with the highest number of snowfall days is January (6.1 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
Rontalon, France
- Average daylight in December: 8h and 48min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in December: 4h and 42min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days in December
Rontalon, France
- Average sunshine days in December: 11.2 days
The month with the most sunshine days is October (14.8 days).
The month with the least sunshine days is May (7.4 days).
Average UV index in December
Rontalon, France
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Rontalon, France
- Average cloud cover in December: 53
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility in December
Rontalon, France
- Average visibility in December: 8km
The months with the highest visibility are February, March, April, May, June, July, August and September (9km).
The months with the lowest visibility are January, October, November and December (8km).
