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
The arrival of December corresponds with a light shift in temperature, down from a frosty 8.3°C (46.9°F) in November to a cold 4.1°C (39.4°F). During the nights in December, an average low-temperature of -1.6°C (29.1°F) is observed.Humidity
With an average relative humidity of 75%, December is the least humid month.Rainfall
In Casto, Italy, in December, during 7.5 rainfall days, 59mm (2.32") of precipitation is typically accumulated. In Casto, during the entire year, the rain falls for 210.8 days and collects up to 1353mm (53.27") of precipitation.Snowfall
January through May, October through December are months with snowfall in Casto. In Casto, in December, snow falls for 6.3 days, with typically accumulated 192mm (7.56") of snow. In Casto, Italy, during the entire year, snow falls for 41.9 days and aggregates up to 1219mm (47.99") of snow.Daylight
The month with the shortest days is December, with an average of 8h and 48min of daylight.On the first day of the month, sunrise is at 07:39 and sunset at 16:36. On the last day of December, in Casto, Italy, sunrise is at 07:59 and sunset at 16:44 CET.
Sunshine
The average sunshine in December in Casto, Italy, is 6.2h.UV index
The months with the lowest UV index in Casto are January, February, October through December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum UV index, 2 during December, leads to the following recommendations:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. To protect against the Sun's most potent rays, avoid direct exposure around midday. Experience reduced UV exposure by about half when donning a wide-brim hat. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Frequently asked questions
Is December cold in Casto?
What is the least humid month in Casto?
What is the average humidity in December in Casto?
How much does it rain in Casto in December?
How much does it snow in Casto in December?
What is the month with the shortest days in Casto?
What is the average length of the day in December in Casto?
When are sunrise and sunset in December in Casto?
How long on average sun shines in December in Casto?
What are the months with the lowest UV index in Casto?
What is the UV index reading in December in Casto?
Average temperature in December
Casto, Italy
- Average high temperature in December: 4.1°C
The warmest month (with the highest average high temperature) is August (22.4°C).
The month with the lowest average high temperature is January (3°C).
- Average low temperature in December: -1.6°C
The month with the highest average low temperature is August (13.8°C).
The coldest month (with the lowest average low temperature) is January (-2.8°C).
Average pressure in December
Casto, Italy
- Average pressure in December: 1020mbar
The month with the highest atmospheric pressure is December (1020mbar).
The month with the lowest atmospheric pressure is May (1014.8mbar).
Average wind speed in December
Casto, Italy
- Average wind speed in December: 6.4km/h
The windiest month (with the highest average wind speed) is March (7.3km/h).
The calmest month (with the lowest average wind speed) is October (6km/h).
Average humidity in December
Casto, Italy
- Average humidity in December: 75%
The month with the highest relative humidity is November (82%).
The month with the lowest relative humidity is December (75%).
Average rainfall in December
Casto, Italy
- Average rainfall in December: 59mm
The wettest month (with the highest rainfall) is June (170mm).
The driest month (with the least rainfall) is January (42mm).
Average rainfall days in December
Casto, Italy
- Average rainfall days in December: 7.5 days
The month with the highest number of rainy days is July (27.1 days).
The month with the least rainy days is January (5.8 days).
Average snowfall in December
Casto, Italy
- Average snowfall in December: 192mm
The month with the highest snowfall is February (344mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Casto, Italy
- Average snowfall days in December: 6.3 days
The month with the highest number of snowfall days is February (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Casto, Italy
- 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: 6h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is November (Average sunshine: 5h and 18min).
Average sunshine days in December
Casto, Italy
- Average sunshine days in December: 19.6 days
The month with the most sunshine days is December (19.6 days).
The month with the least sunshine days is June (1.2 days).
Average UV index in December
Casto, Italy
- 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, October, November and December (UV index 2).
Average cloud cover in December
Casto, Italy
- Average cloud cover in December: 31
The month with the most cloud cover is November (Cloud cover 44).
The months with the least cloud cover are July and August (Cloud cover 27).
Average visibility in December
Casto, Italy
- Average visibility in December: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and December (9km).
The month with the lowest visibility is November (8km).
Casto, Italy
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