December weather forecastYerres, France

December

Weather in December

December, the first month of the winter in Yerres, is still a chilly month, with an average temperature varying between 3°C (37.4°F) and 7.3°C (45.1°F).

Temperature

With the beginning of December, the average high-temperature shows a small decrease, transitioning from a cool 10.5°C (50.9°F) in November to a frosty 7.3°C (45.1°F). December records a small disparity from daytime temperatures, marking an average low-temperature of 3°C (37.4°F).

Humidity

January and December, with an average relative humidity of 85%, are the most humid months.

Rainfall

In Yerres, in December, during 15.4 rainfall days, 50mm (1.97") of precipitation is typically accumulated. In Yerres, during the entire year, the rain falls for 172.7 days and collects up to 467mm (18.39") of precipitation.

Snowfall

Months with snowfall are January through March, November and December. In Yerres, in December, during 1.9 snowfall days, 17mm (0.67") of snow is typically accumulated. Throughout the year, there are 8.5 snowfall days, and 72mm (2.83") of snow is accumulated.

Daylight

With an average of 8h and 24min of daylight, December has the shortest days of the year.
On the first day of December in Yerres, sunrise is at 08:22 and sunset at 16:56. On the last day of the month, sunrise is at 08:42 and sunset at 17:03 CET.

Sunshine

The average sunshine in December is 4.3h.

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 value of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum UV index of 2 during December leads to these instructions:
Most individuals face no major issues with lengthy exposure to the sun, but children, infants, and individuals with fair skin always require protection. Around midday, solar radiation is most harmful; hence, exposure should be limited. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.

Frequently asked questions

Yerres in December has an average high-temperature of 7.3°C (45.1°F) and an average low-temperature of 3°C (37.4°F).

The months with the highest humidity are January and December, with an average relative humidity of 85%.

The average relative humidity in December is 85%.

In Yerres, during December, the rain falls for 15.4 days and regularly aggregates up to 50mm (1.97") of precipitation.

In December, it is snowing for 1.9 days. Throughout December, 17mm (0.67") of snow is accumulated.

With an average of 8h and 24min of daylight, December has the shortest days of the year.

The average day length in December is 8h and 22min.

On the first day of December, sunrise is at 08:22 and sunset at 16:56. On the last day of the month, sunrise is at 08:42 and sunset at 17:03 CET.

In Yerres, the average sunshine duration in December is 4.3h.

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.

The average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents a minimal hazard to health from unprotected exposure to UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Yerres, France

  • Average high temperature in December: 7.3°C

The warmest month (with the highest average high temperature) is August (24.8°C).
The month with the lowest average high temperature is January (6°C).

  • Average low temperature in December: 3°C

The month with the highest average low temperature is August (15.1°C).
The coldest month (with the lowest average low temperature) is January (1.8°C).

Average pressure in December
Yerres, France

  • Average pressure in December: 1018.4mbar

The month with the highest atmospheric pressure is December (1018.4mbar).
The month with the lowest atmospheric pressure is November (1013.5mbar).

Average wind speed in December
Yerres, France

  • Average wind speed in December: 14.9km/h

The windiest month (with the highest average wind speed) is February (15.4km/h).
The calmest month (with the lowest average wind speed) is August (10km/h).

Average humidity in December
Yerres, France

  • Average humidity in December: 85%

The months with the highest relative humidity are January and December (85%).
The month with the lowest relative humidity is August (68%).

Average rainfall in December
Yerres, France

  • Average rainfall in December: 50mm

The wettest month (with the highest rainfall) is June (52mm).
The driest month (with the least rainfall) is September (21mm).

Average rainfall days in December
Yerres, France

  • Average rainfall days in December: 15.4 days

The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is September (10.7 days).

Average snowfall in December
Yerres, France

  • Average snowfall in December: 17mm

The month with the highest snowfall is January (29mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).

Average snowfall days in December
Yerres, France

  • Average snowfall days in December: 1.9 days

The month with the highest number of snowfall days is February (2.8 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
Yerres, France

  • Average daylight in December: 8h and 24min

The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).

  • Average sunshine in December: 4h and 18min

The month with the most sunshine is August (Average sunshine: 9h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

Average sunshine days in December
Yerres, France

  • Average sunshine days in December: 12 days

The month with the most sunshine days is September (17.2 days).
The month with the least sunshine days is June (10.9 days).

Average UV index in December
Yerres, France

  • Average UV index in December: 2

The month with the highest UV index is 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
Yerres, France

  • Average cloud cover in December: 57

The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is September (Cloud cover 37).

Average visibility in December
Yerres, 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).