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
Weather in December
Temperature
Montesson's weather in December involves a mild decrease in the average high-temperature, moving down slightly from November's cool 10.5°C (50.9°F) to a frosty 7.4°C (45.3°F). Montesson experiences an average nighttime temperature of 3°C (37.4°F) in December, reflecting a minor difference from the day's peak.Humidity
The months with the highest humidity in Montesson are January and December, with an average relative humidity of 86%.Rainfall
In Montesson, France, during December, the rain falls for 12.5 days and regularly aggregates up to 31mm (1.22") of precipitation. Throughout the year, in Montesson, there are 147 rainfall days, and 321mm (12.64") of precipitation is accumulated.Snowfall
January through March, November and December are months with snowfall in Montesson, France. December is the month with the most snowfall in Montesson. Snow falls for 1.9 days and accumulates 18mm (0.71") of snow.Daylight
December has the shortest days of the year, with an average of 8h and 18min of daylight.On the first day of the month, sunrise is at 08:24 and sunset at 16:56. On the last day of December, sunrise is at 08:44 and sunset at 17:04 CET.
Sunshine
In December, the average sunshine in Montesson is 4.2h.UV index
The months with the lowest UV index in Montesson are January, February, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV rays for ordinary individuals.Note: The UV index of 2 during December leads to these advisories:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. Minimize direct exposure to the Sun during midday when its radiation is at its peak. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in December in Montesson?
What is the most humid month in Montesson?
What is the average humidity in December in Montesson?
How much does it rain in Montesson in December?
When does it snow the most in Montesson?
How many days does it snow in December in Montesson?
What is the month with the shortest days in Montesson?
What is the average length of the day in December in Montesson?
When are sunrise and sunset in December in Montesson?
How many hours of sunshine does Montesson have in December?
What is the month with the lowest UV index in Montesson?
What is the UV index intensity in December in Montesson?
Average temperature in December
Montesson, 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
Montesson, 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
Montesson, 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
Montesson, 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
Montesson, 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
Montesson, 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
Montesson, 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
Montesson, 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
Montesson, 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 1min
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
Montesson, 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
Montesson, 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
Montesson, 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
Montesson, 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).
Montesson, France
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