December weather forecastPoissy, France

December

Weather in December

The first month of the winter, December, is still a chilly month in Poissy, France, with an average temperature ranging between max 7.4°C (45.3°F) and min 3°C (37.4°F).

Temperature

The beginning of December subtly marks a decrease in the average high-temperature, transitioning from a cool 10.5°C (50.9°F) in November to a chilly 7.4°C (45.3°F). Nighttime readings during December register a minimal drop from daytime highs, averaging at a cold 3°C (37.4°F).

Humidity

The months with the highest humidity are January and December, with an average relative humidity of 86%.

Rainfall

In Poissy, in December, during 12.5 rainfall days, 31mm (1.22") of precipitation is typically accumulated. Throughout the year, there are 147 rainfall days, and 321mm (12.64") of precipitation is accumulated.

Snowfall

January through March, November and December are months with snowfall. December is the month with the most snowfall. Snow falls for 1.9 days and accumulates 18mm (0.71") of snow.

Daylight

With an average of 8h and 18min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 08:24 and sunset at 16:57. On the last day of December, sunrise is at 08:45 and sunset at 17:04 CET.

Sunshine

In Poissy, France, the average sunshine in December is 4.2h.

UV index

The months with the lowest UV index in Poissy are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for ordinary individuals.
Note: In December, a daily UV index of 2 turns into the following recommendations:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Opt for tightly woven and loose clothing to enhance protection from the Sun. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.

Updated: Feb 9, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

In Poissy, 7.4°C (45.3°F) is the average high-temperature and 3°C (37.4°F) is the average low-temperature during December.

The months with the highest humidity in Poissy, France, are January and December, with an average relative humidity of 86%.

In December, the average relative humidity is 86%.

In Poissy, in December, during 12.5 rainfall days, 31mm (1.22") of precipitation is typically accumulated.

December is the month with the most snowfall. Snow falls for 1.9 days and accumulates 18mm (0.71") of snow.

In Poissy, during December, snow falls for 1.9 days and regularly aggregates up to 18mm (0.71") of snow.

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

In December, the average day length is 8h and 19min.

In December, on the first day of the month, sunrise is at 08:24 and sunset at 16:57. On the last day of the month, sunrise is at 08:45 and sunset at 17:04 CET.

In December, the average sunshine duration in Poissy, France, is 4.2h.

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

The average daily maximum UV index in December in Poissy, France, is 2. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

10.5°C

7.4°C

6.1°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

14.8km/h

16.4km/h

15.6km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

14.7

13.8

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Poissy, France

Average high temperature in December: 7.4°C

The warmest month (with the highest average high temperature) is August (24.5°C).
The month with the lowest average high temperature is January (6.1°C).

Average low temperature in December: 3°C

The month with the highest average low temperature is August (14.8°C).
The coldest month (with the lowest average low temperature) is January (1.7°C).

Average pressure in December
Poissy, France

Average pressure in December: 1018.2mbar

The month with the highest atmospheric pressure is December (1018.2mbar).
The month with the lowest atmospheric pressure is November (1013.3mbar).

Average wind speed in December
Poissy, France

Average wind speed in December: 15.4km/h

The windiest month (with the highest average wind speed) is February (15.8km/h).
The calmest month (with the lowest average wind speed) is August (10.2km/h).

Average humidity in December
Poissy, 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 (69%).

Average rainfall in December
Poissy, France

Average rainfall in December: 31mm

The wettest month (with the highest rainfall) is June (40mm).
The driest month (with the least rainfall) is September (14mm).

Average rainfall days in December
Poissy, France

Average rainfall days in December: 12.5 days

The month with the highest number of rainy days is June (15.5 days).
The month with the least rainy days is September (9 days).

Average snowfall in December
Poissy, France

Average snowfall in December: 18mm

The month with the highest snowfall is December (18mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).

Average snowfall days in December
Poissy, France

Average snowfall days in December: 1.9 days

The month with the highest number of snowfall days is January (2.3 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
Poissy, France

Average daylight in December: 8h and 18min

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 12min

The months with the most sunshine are July and August (Average sunshine: 9h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

Average sunshine days in December
Poissy, France

Average sunshine days in December: 13.8 days

The month with the most sunshine days is September (18.8 days).
The month with the least sunshine days is June (12.4 days).

Average UV index in December
Poissy, 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
Poissy, France

Average cloud cover in December: 58

The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is September (Cloud cover 38).

Average visibility in December
Poissy, 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).