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 indicates a minor shift in the average high-temperature, from November's refreshing 16.5°C (61.7°F) to a cool 12.5°C (54.5°F). In December, Formello's temperature tends to fall to an average low of 6.5°C (43.7°F) during the night.Humidity
In December, the average relative humidity is 75%.Rainfall
In December, the rain falls for 11.9 days. Throughout December, 45mm (1.77") of precipitation is accumulated. In Formello, during the entire year, the rain falls for 116.5 days and collects up to 416mm (16.38") of precipitation.Snowfall
In Formello, snow does not fall in March through December.Daylight
With an average of 9h and 12min of daylight, December has the shortest days of the year in Formello, Italy.On the first day of December in Formello, Italy, sunrise is at 07:19 and sunset at 16:39. On the last day of the month, sunrise is at 07:38 and sunset at 16:48 CET.
Sunshine
In Formello, Italy, the average sunshine in December is 6.1h.UV index
January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index in Formello. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for average individuals.Note: The UV index of 3 during December translates into the following guidance:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Outfit yourself in sun-safe attire, like long sleeves, pants, a hat, and UV-blocking sunglasses. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are December temperatures in Formello?
What is the average humidity in December in Formello?
How many days does it rain in December in Formello?
When it does not snow in Formello?
Does it snow in Formello in December?
What is the month with the shortest days in Formello?
What is the average length of the day in December in Formello?
When is the sunrise / sunset in December in Formello?
How long on average sun shines in December in Formello?
When is the lowest UV index in Formello?
How high is the UV index in December in Formello?
Average temperature in December
Formello, Italy
- Average high temperature in December: 12.5°C
The warmest month (with the highest average high temperature) is August (30.9°C).
The month with the lowest average high temperature is January (11.3°C).
- Average low temperature in December: 6.5°C
The month with the highest average low temperature is August (20.7°C).
The coldest months (with the lowest average low temperature) are January and February (5.3°C).
Average pressure in December
Formello, 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
Formello, Italy
- Average wind speed in December: 12.7km/h
The windiest month (with the highest average wind speed) is February (14.3km/h).
The calmest month (with the lowest average wind speed) is July (9.4km/h).
Average humidity in December
Formello, Italy
- Average humidity in December: 75%
The months with the highest relative humidity are January and November (77%).
The month with the lowest relative humidity is August (58%).
Average rainfall in December
Formello, Italy
- Average rainfall in December: 45mm
The wettest month (with the highest rainfall) is November (75mm).
The driest month (with the least rainfall) is August (8mm).
Average rainfall days in December
Formello, Italy
- Average rainfall days in December: 11.9 days
The month with the highest number of rainy days is November (13.5 days).
The month with the least rainy days is August (3.3 days).
Average snowfall in December
Formello, Italy
- Average snowfall in December: 0mm
The month with the highest snowfall is February (15mm).
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in December
Formello, Italy
- Average snowfall days in December: 0.1 days
The month with the highest number of snowfall days is February (0.7 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
Formello, 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 months with the most sunshine are July and August (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 5h and 48min).
Average sunshine days in December
Formello, Italy
- Average sunshine days in December: 17.5 days
The month with the most sunshine days is August (26.3 days).
The month with the least sunshine days is November (14.4 days).
Average UV index in December
Formello, Italy
- Average UV index in December: 3
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).
Average cloud cover in December
Formello, Italy
- Average cloud cover in December: 33
The month with the most cloud cover is January (Cloud cover 38).
The month with the least cloud cover is August (Cloud cover 9).
Average visibility in December
Formello, Italy
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (10km).
Formello, Italy
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