Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
December
Weather in December
Temperature
December's arrival comes with a mild decrease in the average high-temperature, moving subtly from a fresh 10.4°C (50.7°F) in November to a frosty 6.8°C (44.2°F). During December, the nighttime temperature in Saint-Just-Chaleyssin averages of 1.4°C (34.5°F).Humidity
With an average relative humidity of 86%, December is the most humid month in Saint-Just-Chaleyssin, France.Rainfall
In December, the rain falls for 13.1 days. Throughout December, 46mm (1.81") of precipitation is accumulated. In Saint-Just-Chaleyssin, during the entire year, the rain falls for 151.5 days and collects up to 504mm (19.84") of precipitation.Snowfall
Months with snowfall are January through March, October through December. In December, it is snowing for 4.4 days. Throughout December, 31mm (1.22") of snow is accumulated. In Saint-Just-Chaleyssin, during the entire year, snow falls for 21.4 days and aggregates up to 181mm (7.13") of snow.Daylight
The month with the shortest days in Saint-Just-Chaleyssin is December, with an average of 8h and 48min of daylight.On the first day of the month, sunrise is at 08:00 and sunset at 16:57. On the last day of December, in Saint-Just-Chaleyssin, sunrise is at 08:20 and sunset at 17:06 CET.
Sunshine
In December, the average sunshine is 4.7h.UV index
The months with the lowest UV index in Saint-Just-Chaleyssin 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 unprotected exposure to Sun's UV rays for the average person.Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. During bright days, sunglasses that offer UVA and UVB defense are recommended. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it cold in Saint-Just-Chaleyssin during December?
What is the most humid month in Saint-Just-Chaleyssin?
What is the average humidity in December in Saint-Just-Chaleyssin?
How much does it rain in Saint-Just-Chaleyssin in December?
How many days does it snow in December in Saint-Just-Chaleyssin?
What is the month with the shortest days in Saint-Just-Chaleyssin?
How many hours of daylight does Saint-Just-Chaleyssin have in December?
What time are sunrise and sunset in December in Saint-Just-Chaleyssin?
How many hours of sunshine does Saint-Just-Chaleyssin have in December?
When is the lowest UV index in Saint-Just-Chaleyssin?
What is the UV index intensity in December in Saint-Just-Chaleyssin?
Average temperature in December
Saint-Just-Chaleyssin, France
- Average high temperature in December: 6.8°C
The warmest month (with the highest average high temperature) is August (26°C).
The month with the lowest average high temperature is January (5.3°C).
- Average low temperature in December: 1.4°C
The month with the highest average low temperature is July (14.4°C).
The coldest months (with the lowest average low temperature) are January and February (0.2°C).
Average pressure in December
Saint-Just-Chaleyssin, France
- Average pressure in December: 1021.2mbar
The month with the highest atmospheric pressure is December (1021.2mbar).
The month with the lowest atmospheric pressure is April (1015.3mbar).
Average wind speed in December
Saint-Just-Chaleyssin, France
- Average wind speed in December: 11.2km/h
The windiest month (with the highest average wind speed) is February (12.6km/h).
The calmest month (with the lowest average wind speed) is September (9.2km/h).
Average humidity in December
Saint-Just-Chaleyssin, France
- Average humidity in December: 86%
The month with the highest relative humidity is December (86%).
The month with the lowest relative humidity is August (71%).
Average rainfall in December
Saint-Just-Chaleyssin, France
- Average rainfall in December: 46mm
The wettest month (with the highest rainfall) is November (56mm).
The driest month (with the least rainfall) is February (25mm).
Average rainfall days in December
Saint-Just-Chaleyssin, France
- Average rainfall days in December: 13.1 days
The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is September (10.2 days).
Average snowfall in December
Saint-Just-Chaleyssin, France
- Average snowfall in December: 31mm
The month with the highest snowfall is November (79mm).
The months with the least snowfall are April, May, June, July, August and September (0mm).
Average snowfall days in December
Saint-Just-Chaleyssin, France
- Average snowfall days in December: 4.4 days
The month with the highest number of snowfall days is January (6.2 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Saint-Just-Chaleyssin, France
- Average daylight in December: 8h and 5min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in December: 4h and 4min
The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 4h and 24min).
Average sunshine days in December
Saint-Just-Chaleyssin, France
- Average sunshine days in December: 13.5 days
The month with the most sunshine days is August (17.4 days).
The month with the least sunshine days is May (12.3 days).
Average UV index in December
Saint-Just-Chaleyssin, France
- Average UV index in December: 2
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Saint-Just-Chaleyssin, France
- Average cloud cover in December: 54
The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in December
Saint-Just-Chaleyssin, France
- Average visibility in December: 8km
The months with the highest visibility are February, March, April, May, June, July and August (9km).
The months with the lowest visibility are January, September, October, November and December (8km).
