December weather forecastMettray, France
December
Weather in December
December, the first month of the winter in Mettray, is still a chilly month, with an average temperature fluctuating between 8.1°C (46.6°F) and 3.5°C (38.3°F).Temperature
The transition into December involves a small decrease in the average high-temperature, dipping slightly from a fresh 11.1°C (52°F) in November to a chilly 8.1°C (46.6°F). Mettray records a consistent average nighttime temperature of 3.5°C (38.3°F) in December, slightly lower than the daytime high.Humidity
The months with the highest humidity in Mettray are January and December, with an average relative humidity of 87%.Rainfall
In December, in Mettray, the rain falls for 14.5 days. Throughout December, 49mm (1.93") of precipitation is accumulated. Throughout the year, there are 159.8 rainfall days, and 436mm (17.17") of precipitation is accumulated.Snowfall
January through March, November and December are months with snowfall. In December, it is snowing for 0.9 days. Throughout December, 2mm (0.08") of snow is accumulated. In Mettray, during the entire year, snow falls for 4.6 days and aggregates up to 19mm (0.75") 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 08:24 and sunset at 17:08. On the last day of the month, sunrise is at 08:44 and sunset at 17:16 CET.
Sunshine
In Mettray, the average sunshine in December is 4.4h.UV index
The months with the lowest UV index in Mettray are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The average daily UV index of 2 in December transforms into the following instructions:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. Around midday, solar radiation is most harmful; hence, exposure should be limited. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Mettray, France
- Average high temperature in December: 8.1°C
The warmest month (with the highest average high temperature) is August (24.7°C).
The month with the lowest average high temperature is January (6.9°C).
- Average low temperature in December: 3.5°C
The month with the highest average low temperature is July (14.3°C).
The coldest month (with the lowest average low temperature) is February (2°C).
Average pressure in December
Mettray, France
- Average pressure in December: 1019.4mbar
The month with the highest atmospheric pressure is December (1019.4mbar).
The month with the lowest atmospheric pressure is November (1013.9mbar).
Average wind speed in December
Mettray, France
- Average wind speed in December: 16.5km/h
The windiest month (with the highest average wind speed) is February (17.1km/h).
The calmest month (with the lowest average wind speed) is August (11km/h).
Average humidity in December
Mettray, 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 (71%).
Average rainfall in December
Mettray, France
- Average rainfall in December: 49mm
The wettest month (with the highest rainfall) is November (53mm).
The driest month (with the least rainfall) is September (26mm).
Average rainfall days in December
Mettray, France
- Average rainfall days in December: 14.5 days
The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is September (9.6 days).
Average snowfall in December
Mettray, France
- Average snowfall in December: 2mm
The months with the highest snowfall are January and February (7mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in December
Mettray, France
- Average snowfall days in December: 0.9 days
The month with the highest number of snowfall days is February (1.6 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Mettray, 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 month with the most sunshine is July (Average sunshine: 9h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in December
Mettray, France
- Average sunshine days in December: 13.5 days
The month with the most sunshine days is September (18.4 days).
The months with the least sunshine days are June and November (12.8 days).
Average UV index in December
Mettray, France
- Average UV index in December: 2
The months with the highest UV index are May, 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
Mettray, France
- Average cloud cover in December: 55
The month with the most cloud cover is January (Cloud cover 59).
The months with the least cloud cover are August and September (Cloud cover 36).
Average visibility in December
Mettray, France
- Average visibility in December: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
