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
December signals a slight drop in average high-temperature, sliding from November's moderate 15.7°C (60.3°F) to a fresh 11.5°C (52.7°F). In Mentana, the December nights cool down to an average low of 3.9°C (39°F).Humidity
The average relative humidity in December in Mentana is 76%.Rainfall
In Mentana, during December, the rain falls for 10.6 days and regularly aggregates up to 53mm (2.09") of precipitation. In Mentana, Italy, during the entire year, the rain falls for 147.7 days and collects up to 566mm (22.28") of precipitation.Snowfall
In Mentana, snow does not fall in January, March through December.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 07:18 and sunset at 16:38. On the last day of December, in Mentana, sunrise is at 07:37 and sunset at 16:47 CET.
Sunshine
The average sunshine in December in Mentana is 6.2h.UV index
In Mentana, the average daily maximum UV index in December is 3. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for the average person.Note: An average UV index of 3 in December transforms into this advice:
Adopt protective measures - Requirement to safeguard skin and eyes from harm exists. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
Frequently asked questions
What is the usual temperature for Mentana in December?
What is the average humidity in December in Mentana?
How many days does it rain in December in Mentana?
When it does not snow in Mentana?
What is the month with the shortest days in Mentana?
What is the average length of the day in December in Mentana?
When are sunrise and sunset in December in Mentana?
How many hours of sunshine does Mentana have in December?
How high is the UV index in December in Mentana?
Average temperature in December
Mentana, Italy
- Average high temperature in December: 11.5°C
The warmest month (with the highest average high temperature) is August (31.3°C).
The month with the lowest average high temperature is January (10.3°C).
- Average low temperature in December: 3.9°C
The month with the highest average low temperature is August (17.8°C).
The coldest month (with the lowest average low temperature) is January (2.8°C).
Average pressure in December
Mentana, Italy
- Average pressure in December: 1018.5mbar
The month with the highest atmospheric pressure is December (1018.5mbar).
The month with the lowest atmospheric pressure is April (1014mbar).
Average wind speed in December
Mentana, Italy
- Average wind speed in December: 9.3km/h
The windiest month (with the highest average wind speed) is February (10.6km/h).
The calmest months (with the lowest average wind speed) are July and August (7.7km/h).
Average humidity in December
Mentana, Italy
- Average humidity in December: 76%
The months with the highest relative humidity are January and November (78%).
The month with the lowest relative humidity is August (56%).
Average rainfall in December
Mentana, Italy
- Average rainfall in December: 53mm
The wettest month (with the highest rainfall) is November (90mm).
The driest month (with the least rainfall) is August (24mm).
Average rainfall days in December
Mentana, Italy
- Average rainfall days in December: 10.6 days
The month with the highest number of rainy days is April (15.2 days).
The month with the least rainy days is August (8 days).
Average snowfall in December
Mentana, Italy
- Average snowfall in December: 0mm
The month with the highest snowfall is February (5mm).
The months with the least snowfall are January, March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in December
Mentana, Italy
- Average snowfall days in December: 0.1 days
The month with the highest number of snowfall days is February (0.4 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in December /
Average sunshine in December
Mentana, Italy
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in December: 6h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 5h and 54min).
Average sunshine days in December
Mentana, Italy
- Average sunshine days in December: 19.4 days
The month with the most sunshine days is August (21.4 days).
The month with the least sunshine days is April (12.8 days).
Average UV index in December
Mentana, Italy
- Average UV index in December: 3
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 2).
Average cloud cover in December
Mentana, Italy
- Average cloud cover in December: 31
The months with the most cloud cover are January and February (Cloud cover 36).
The month with the least cloud cover is August (Cloud cover 11).
Average visibility in December
Mentana, Italy
- Average visibility in December: 10km
The months with the highest visibility are June, July, August, September, October and December (10km).
The months with the lowest visibility are January, February, March, April, May and November (9km).
Mentana, Italy
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