December weather forecastRiom, France
December
Weather in December
December, the first month of the winter in Riom, is still a chilly month, with an average temperature ranging between max 6.7°C (44.1°F) and min 0.8°C (33.4°F).Temperature
Riom's progression into December involves a minor drop in the average high-temperature, slightly receding from a cool 10°C (50°F) in November to a chilly 6.7°C (44.1°F). Riom temperatures generally rest at a low of 0.8°C (33.4°F) during the December nights.Humidity
In December, the average relative humidity in Riom is 84%.Rainfall
In December, in Riom, the rain falls for 13.3 days. Throughout December, 30mm (1.18") of precipitation is accumulated. Throughout the year, there are 178.9 rainfall days, and 492mm (19.37") of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Riom, in December, during 3.6 snowfall days, 20mm (0.79") of snow is typically accumulated. Throughout the year, in Riom, there are 21.5 snowfall days, and 145mm (5.71") of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 8h and 42min of daylight.On the first day of the month, sunrise is at 08:09 and sunset at 17:04. On the last day of December, sunrise is at 08:28 and sunset at 17:12 CET.
Sunshine
In Riom, the average sunshine in December is 5h.UV index
The months with the lowest UV index in Riom, France, are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for the average person.Note: In December, the maximum UV index of 2 suggests these recommendations:
Babies, children, and those with sensitive skin should always avoid extended periods in the sun. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. 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
Riom, France
- Average high temperature in December: 6.7°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 (5.1°C).
- Average low temperature in December: 0.8°C
The month with the highest average low temperature is August (12.2°C).
The coldest month (with the lowest average low temperature) is February (-1.2°C).
Average pressure in December
Riom, 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 November (1015.5mbar).
Average wind speed in December
Riom, France
- Average wind speed in December: 11.2km/h
The windiest month (with the highest average wind speed) is February (11.9km/h).
The calmest month (with the lowest average wind speed) is August (7.5km/h).
Average humidity in December
Riom, France
- Average humidity in December: 84%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (73%).
Average rainfall in December
Riom, France
- Average rainfall in December: 30mm
The wettest month (with the highest rainfall) is June (67mm).
The driest month (with the least rainfall) is September (25mm).
Average rainfall days in December
Riom, France
- Average rainfall days in December: 13.3 days
The month with the highest number of rainy days is May (19.9 days).
The month with the least rainy days is October (11.2 days).
Average snowfall in December
Riom, France
- Average snowfall in December: 20mm
The month with the highest snowfall is February (43mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Riom, France
- Average snowfall days in December: 3.6 days
The month with the highest number of snowfall days is January (6.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Riom, France
- Average daylight in December: 8h and 42min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in December: 5h and 0min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in December
Riom, France
- Average sunshine days in December: 13.5 days
The month with the most sunshine days is October (17.3 days).
The month with the least sunshine days is May (8 days).
Average UV index in December
Riom, 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
Riom, France
- Average cloud cover in December: 50
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in December
Riom, France
- Average visibility in December: 8km
The months with the highest visibility are March and August (9km).
The months with the lowest visibility are January, February, April, May, June, July, September, October, November and December (8km).
