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
As Valle Castellana, Italy, enters December, the average high-temperature subtly lowers from the a refreshing 13.8°C (56.8°F) of November to a frosty 9.5°C (49.1°F). The low-temperature averages to an icy 3.6°C (38.5°F) during the nights of December.Humidity
In Valle Castellana, the average relative humidity in December is 78%.Rainfall
December is the month with the least rainfall. Rain falls for 12.1 days and accumulates 37mm (1.46") of precipitation.Snowfall
Months with snowfall in Valle Castellana are January through April, November and December. In Valle Castellana, in December, snow falls for 0.7 days, with typically accumulated 8mm (0.31") of snow. Throughout the year, there are 6 snowfall days, and 140mm (5.51") of snow is accumulated.Daylight
The month with the shortest days in Valle Castellana is December, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 07:17 and sunset at 16:33. On the last day of December, in Valle Castellana, sunrise is at 07:36 and sunset at 16:42 CET.
Sunshine
In December, the average sunshine in Valle Castellana is 6.3h.UV index
January and December, with an average maximum UV index of 2, are months with the lowest UV index in Valle Castellana, Italy. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum high daily UV index of 2 during December translates into the following directions:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Frequently asked questions
What is the usual temperature for Valle Castellana in December?
What is the average humidity in December in Valle Castellana?
What is the driest month in Valle Castellana?
How much does it rain in Valle Castellana in December?
How many days does it snow in December in Valle Castellana?
What is the month with the shortest days in Valle Castellana?
How many hours of daylight does Valle Castellana have in December?
When is the sunrise / sunset in December in Valle Castellana?
How long on average sun shines in December in Valle Castellana?
What is the month with the lowest UV index in Valle Castellana?
What is the UV index reading in December in Valle Castellana?
Average temperature in December
Valle Castellana, Italy
- Average high temperature in December: 9.5°C
The warmest month (with the highest average high temperature) is August (28°C).
The month with the lowest average high temperature is January (7.9°C).
- Average low temperature in December: 3.6°C
The month with the highest average low temperature is August (17.5°C).
The coldest month (with the lowest average low temperature) is January (2.6°C).
Average pressure in December
Valle Castellana, 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 July (1013.5mbar).
Average wind speed in December
Valle Castellana, Italy
- Average wind speed in December: 8.3km/h
The windiest month (with the highest average wind speed) is February (9.1km/h).
The calmest month (with the lowest average wind speed) is November (7.3km/h).
Average humidity in December
Valle Castellana, Italy
- Average humidity in December: 78%
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is August (63%).
Average rainfall in December
Valle Castellana, Italy
- Average rainfall in December: 37mm
The wettest month (with the highest rainfall) is May (96mm).
The driest month (with the least rainfall) is December (37mm).
Average rainfall days in December
Valle Castellana, Italy
- Average rainfall days in December: 12.1 days
The month with the highest number of rainy days is May (20.5 days).
The month with the least rainy days is December (12.1 days).
Average snowfall in December
Valle Castellana, Italy
- Average snowfall in December: 8mm
The month with the highest snowfall is February (53mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in December
Valle Castellana, Italy
- Average snowfall days in December: 0.7 days
The month with the highest number of snowfall days is February (2.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Valle Castellana, Italy
- Average daylight in December: 9h and 1min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 6h and 2min
The month with the most sunshine is August (Average sunshine: 11h and 36min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).
Average sunshine days in December
Valle Castellana, Italy
- Average sunshine days in December: 16.9 days
The months with the most sunshine days are January and December (16.9 days).
The month with the least sunshine days is June (7.6 days).
Average UV index in December
Valle Castellana, Italy
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in December
Valle Castellana, Italy
- Average cloud cover in December: 32
The month with the most cloud cover is January (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 14).
Average visibility in December
Valle Castellana, Italy
- Average visibility in December: 9km
The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are January, February, March, April, May, October, November and December (9km).
Valle Castellana, Italy
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