December weather forecast
Jouy-en-Josas, France

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Weather in December

The first month of the winter, December, is also a frosty month in Jouy-en-Josas, France, with an average temperature fluctuating between 3°C (37.4°F) and 7.3°C (45.1°F).

Temperature

A minor decrease in the average high-temperature is observed during December, shifting from a cool 10.5°C (50.9°F) in November to a chilly 7.3°C (45.1°F). In Jouy-en-Josas, the nightly December temperatures experience a slight descent from daily highs to an average low of 3°C (37.4°F).

Humidity

The months with the highest humidity in Jouy-en-Josas are January and December, with an average relative humidity of 86%.

Rainfall

In Jouy-en-Josas, in December, during 13.9 rainfall days, 43mm (1.69") of precipitation is typically accumulated. In Jouy-en-Josas, during the entire year, the rain falls for 154.9 days and collects up to 384mm (15.12") of precipitation.

Snowfall

Months with snowfall are January through March, November and December. In Jouy-en-Josas, France, during December, snow falls for 1.1 days and regularly aggregates up to 12mm (0.47") of snow. In Jouy-en-Josas, during the entire year, snow falls for 4.5 days and aggregates up to 37mm (1.46") of snow.

Daylight

The month with the shortest days is December, with an average of 8h and 18min of daylight.
On the first day of the month, sunrise is at 08:23 and sunset at 16:57. On the last day of December, in Jouy-en-Josas, sunrise is at 08:44 and sunset at 17:04 CET.

Sunshine

In Jouy-en-Josas, the average sunshine in December is 4.3h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In December, the maximum UV index of 2 translates into these guidelines:
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 effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.

Frequently asked questions

What are December temperatures in Jouy-en-Josas?

In December, in Jouy-en-Josas, the average high-temperature is 7.3°C (45.1°F), and the average low-temperature is 3°C (37.4°F).

What are the most humid months in Jouy-en-Josas?

January and December, with an average relative humidity of 86%, are most humid months in Jouy-en-Josas, France.

What is the average humidity in December in Jouy-en-Josas?

In December, the average relative humidity is 86%.

How many days does it rain in December in Jouy-en-Josas?

In Jouy-en-Josas, in December, it is raining for 13.9 days, with typically 43mm (1.69") of accumulated precipitation.

How many days does it snow in December in Jouy-en-Josas?

In December, in Jouy-en-Josas, France, it is snowing for 1.1 days. Throughout December, 12mm (0.47") of snow is accumulated.

What is the month with the shortest days in Jouy-en-Josas?

The month with the shortest days is December, with an average of 8h and 18min of daylight.

How many hours of daylight does Jouy-en-Josas have in December?

The average day length in December in Jouy-en-Josas, France, is 8h and 21min.

What time are sunrise and sunset in December in Jouy-en-Josas?

In December, on the first day of the month, sunrise is at 08:23 and sunset at 16:57. On the last day of the month, sunrise is at 08:44 and sunset at 17:04 CET.

How many hours of sunshine does Jouy-en-Josas have in December?

The average sunshine duration in December in Jouy-en-Josas is 4.3h.

What is the month with the lowest UV index in Jouy-en-Josas?

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Jouy-en-Josas, France.

What is the UV index reading in December in Jouy-en-Josas?

In December, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a low health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Jouy-en-Josas, France

Average temperature in December - Jouy-en-Josas, France
  • Average high temperature in December: 7.3°C

The warmest month (with the highest average high temperature) is August (24.6°C).
The month with the lowest average high temperature is January (5.9°C).

  • Average low temperature in December: 3°C

The month with the highest average low temperature is August (14.9°C).
The coldest month (with the lowest average low temperature) is January (1.8°C).

Average pressure in December
Jouy-en-Josas, France

Average pressure in December - Jouy-en-Josas, France
  • Average pressure in December: 1018.3mbar

The month with the highest atmospheric pressure is December (1018.3mbar).
The month with the lowest atmospheric pressure is November (1013.4mbar).

Average wind speed in December
Jouy-en-Josas, France

Average wind speed in December - Jouy-en-Josas, France
  • Average wind speed in December: 15.1km/h

The windiest month (with the highest average wind speed) is February (15.5km/h).
The calmest month (with the lowest average wind speed) is August (10.1km/h).

Average humidity in December
Jouy-en-Josas, France

Average humidity in December - Jouy-en-Josas, France
  • Average humidity in December: 86%

The months with the highest relative humidity are January and December (86%).
The month with the lowest relative humidity is August (68%).

Average rainfall in December
Jouy-en-Josas, France

Average rainfall in December - Jouy-en-Josas, France
  • Average rainfall in December: 43mm

The wettest month (with the highest rainfall) is June (46mm).
The driest month (with the least rainfall) is September (18mm).

Average rainfall days in December
Jouy-en-Josas, France

Average rainfall days in December - Jouy-en-Josas, France
  • Average rainfall days in December: 13.9 days

The month with the highest number of rainy days is June (16.3 days).
The month with the least rainy days is September (9.6 days).

Average snowfall in December
Jouy-en-Josas, France

Average snowfall in December - Jouy-en-Josas, France
  • Average snowfall in December: 12mm

The month with the highest snowfall is January (13mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).

Average snowfall days in December
Jouy-en-Josas, France

Average snowfall days in December - Jouy-en-Josas, France
  • Average snowfall days in December: 1.1 days

The months with the highest number of snowfall days are January and February (1.3 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
Jouy-en-Josas, France

Average daylight in December / Average sunshine in December - Jouy-en-Josas, France
  • Average daylight in December: 8h and 2min

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 18min).

  • Average sunshine in December: 4h and 2min

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
Jouy-en-Josas, France

Average sunshine days in December - Jouy-en-Josas, France
  • Average sunshine days in December: 14.5 days

The months with the most sunshine days are March and September (18.5 days).
The month with the least sunshine days is June (12.3 days).

Average UV index in December
Jouy-en-Josas, France

Average UV index in December - Jouy-en-Josas, 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
Jouy-en-Josas, France

Average cloud cover in December - Jouy-en-Josas, France
  • Average cloud cover in December: 57

The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is September (Cloud cover 37).

Average visibility in December
Jouy-en-Josas, France

Average visibility in December - Jouy-en-Josas, 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).

Jouy-en-Josas, France

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