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 sees a slight reduction in average high-temperature, with a shift from a frosty 8.1°C (46.6°F) in November to an icy 4.5°C (40.1°F). Throughout December, the nighttime temperature averages to a freezing cold -1.8°C (28.8°F).Humidity
In Crolles, the average relative humidity in December is 83%.Rainfall
December is the month with the most rainfall in Crolles. Rain falls for 8.2 days and accumulates 50mm (1.97") of precipitation.Snowfall
Months with snowfall in Crolles are January through May, October through December. December is the month with the most snowfall. Snow falls for 10.3 days and accumulates 197mm (7.76") of snow.Daylight
The month with the shortest days in Crolles, France, is December, with an average of 8h and 48min of daylight.On the first day of the month, sunrise is at 07:55 and sunset at 16:55. On the last day of December, sunrise is at 08:15 and sunset at 17:03 CET.
Sunshine
The months with the least sunshine are January and December, with an average of 5.5h of sunshine.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for the ordinary person.Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Crolles in December?
What is the average humidity in December in Crolles?
What is the wettest month in Crolles?
How much does it rain in Crolles in December?
What is the snowiest month in Crolles?
How many days does it snow in December in Crolles?
What is the month with the shortest days in Crolles?
What is the average length of the day in December in Crolles?
What time are sunrise and sunset in December in Crolles?
What is the month with the least sunshine in Crolles?
How long on average sun shines in December in Crolles?
When is the lowest UV index in Crolles?
How high is the UV index in December in Crolles?
Average temperature in December
Crolles, France
- Average high temperature in December: 4.5°C
The warmest months (with the highest average high temperature) are July and August (22.6°C).
The month with the lowest average high temperature is January (2.8°C).
- Average low temperature in December: -1.8°C
The months with the highest average low temperature are July and August (11.2°C).
The coldest month (with the lowest average low temperature) is February (-3.7°C).
Average pressure in December
Crolles, France
- Average pressure in December: 1020.8mbar
The month with the highest atmospheric pressure is December (1020.8mbar).
The month with the lowest atmospheric pressure is April (1015mbar).
Average wind speed in December
Crolles, France
- Average wind speed in December: 7.6km/h
The windiest month (with the highest average wind speed) is February (8km/h).
The calmest month (with the lowest average wind speed) is September (6.2km/h).
Average humidity in December
Crolles, France
- Average humidity in December: 83%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is August (74%).
Average rainfall in December
Crolles, France
- Average rainfall in December: 50mm
The wettest month (with the highest rainfall) is December (50mm).
The driest month (with the least rainfall) is September (23mm).
Average rainfall days in December
Crolles, France
- Average rainfall days in December: 8.2 days
The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is February (5.3 days).
Average snowfall in December
Crolles, France
- Average snowfall in December: 197mm
The month with the highest snowfall is December (197mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Crolles, France
- Average snowfall days in December: 10.3 days
The month with the highest number of snowfall days is January (12.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Crolles, 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: 5h and 3min
The months with the most sunshine are July and August (Average sunshine: 11h and 0min).
The months with the least sunshine are January and December (Average sunshine: 5h and 30min).
Average sunshine days in December
Crolles, France
- Average sunshine days in December: 16.5 days
The month with the most sunshine days is October (17.8 days).
The month with the least sunshine days is May (11.9 days).
Average UV index in December
Crolles, France
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Crolles, France
- Average cloud cover in December: 40
The months with the most cloud cover are January and February (Cloud cover 42).
The month with the least cloud cover is August (Cloud cover 25).
Average visibility in December
Crolles, France
- Average visibility in December: 8km
The months with the highest visibility are March and August (9km).
The months with the lowest visibility are January, February, April, May, June, July, September, October, November and December (8km).
