December weather forecastRoilly, France
December
Weather in December
The first month of the winter, December, is also a frosty month in Roilly, France, with an average temperature varying between 6.1°C (43°F) and 1.4°C (34.5°F).Temperature
Roilly's transition into December involves a gentle shift in temperature, receding from 9.5°C (49.1°F) in November to a still chilly 6.1°C (43°F). Roilly's December nights demonstrate minimal variation from the daytime temperatures, with an average of 1.4°C (34.5°F).Humidity
With an average relative humidity of 89%, December is the most humid month.Rainfall
The month with the most rainfall in Roilly is December, when the rain falls for 15.2 days and typically aggregates up to 53mm (2.09") of precipitation.Snowfall
Months with snowfall in Roilly are January through March, November and December. In Roilly, France, in December, during 4.4 snowfall days, 27mm (1.06") of snow is typically accumulated. In Roilly, during the entire year, snow falls for 19.2 days and aggregates up to 125mm (4.92") of snow.Daylight
December has the shortest days of the year, with an average of 8h and 30min of daylight.On the first day of December, sunrise is at 08:09 and sunset at 16:53. On the last day of the month, sunrise is at 08:29 and sunset at 17:01 CET.
Sunshine
January and December, with an average of 3.7h of sunshine, are months with the least sunshine.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Roilly. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Roilly, France
- Average high temperature in December: 6.1°C
The warmest month (with the highest average high temperature) is August (24.3°C).
The month with the lowest average high temperature is January (4.8°C).
- Average low temperature in December: 1.4°C
The month with the highest average low temperature is August (13.4°C).
The coldest month (with the lowest average low temperature) is January (-0.1°C).
Average pressure in December
Roilly, France
- Average pressure in December: 1019.9mbar
The month with the highest atmospheric pressure is December (1019.9mbar).
The month with the lowest atmospheric pressure is November (1014.8mbar).
Average wind speed in December
Roilly, France
- Average wind speed in December: 14.7km/h
The windiest month (with the highest average wind speed) is February (14.8km/h).
The calmest month (with the lowest average wind speed) is August (9.3km/h).
Average humidity in December
Roilly, France
- Average humidity in December: 89%
The month with the highest relative humidity is December (89%).
The month with the lowest relative humidity is August (74%).
Average rainfall in December
Roilly, France
- Average rainfall in December: 53mm
The wettest month (with the highest rainfall) is December (53mm).
The driest month (with the least rainfall) is September (27mm).
Average rainfall days in December
Roilly, France
- Average rainfall days in December: 15.2 days
The month with the highest number of rainy days is May (17.4 days).
The month with the least rainy days is September (10.8 days).
Average snowfall in December
Roilly, France
- Average snowfall in December: 27mm
The month with the highest snowfall is January (48mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in December
Roilly, France
- Average snowfall days in December: 4.4 days
The month with the highest number of snowfall days is January (6.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Roilly, 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: 3h and 42min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The months with the least sunshine are January and December (Average sunshine: 3h and 42min).
Average sunshine days in December
Roilly, France
- Average sunshine days in December: 10.5 days
The month with the most sunshine days is September (16.3 days).
The month with the least sunshine days is June (9.5 days).
Average UV index in December
Roilly, France
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Roilly, France
- Average cloud cover in December: 63
The months with the most cloud cover are January and December (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in December
Roilly, France
- Average visibility in December: 8km
The months with the highest visibility are March, April and August (9km).
The months with the lowest visibility are January, February, May, June, July, September, October, November and December (8km).
