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
Grono's weather subtly changes with the onset of December, barely falling from a frosty 6°C (42.8°F) in November to an icy 2.7°C (36.9°F). In December, the recorded average low-temperature in Grono is a freezing cold -4°C (24.8°F).Humidity
In December, the average relative humidity in Grono is 78%.Rainfall
In Grono, in December, it is raining for 6.4 days, with typically 38mm (1.5") of accumulated precipitation. Throughout the year, there are 137.8 rainfall days, and 669mm (26.34") of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. In Grono, in December, during 0.6 snowfall days, 3mm (0.12") of snow is typically accumulated. In Grono, during the entire year, snow falls for 4.8 days and aggregates up to 33mm (1.3") of snow.Daylight
The month with the shortest days in Grono, Switzerland, is December, with an average of 8h and 42min of daylight.On the first day of the month, sunrise is at 07:46 and sunset at 16:39. On the last day of December, sunrise is at 08:06 and sunset at 16:47 CET.
Sunshine
In December, the average sunshine in Grono is 6.4h.UV index
The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 2 in December translates into these instructions:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. Sun exposure should be minimized, especially during midday, to avoid harmful UV radiation. Employ a wide-brim hat for potent defense against up to 50% of UV rays. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Frequently asked questions
How cold is it in Grono in December?
What is the average humidity in December in Grono?
How many days does it rain in December in Grono?
How many days does it snow in December in Grono?
What is the month with the shortest days in Grono?
What is the average length of the day in December in Grono?
When is the sunrise / sunset in December in Grono?
How long on average sun shines in December in Grono?
When is the lowest UV index in Grono?
What is the UV index intensity in December in Grono?
Average temperature in December
Grono, Switzerland
- Average high temperature in December: 2.7°C
The warmest month (with the highest average high temperature) is July (21.9°C).
The month with the lowest average high temperature is January (1.6°C).
- Average low temperature in December: -4°C
The months with the highest average low temperature are July and August (11.1°C).
The coldest month (with the lowest average low temperature) is February (-5.1°C).
Average pressure in December
Grono, Switzerland
- Average pressure in December: 1020.6mbar
The month with the highest atmospheric pressure is December (1020.6mbar).
The month with the lowest atmospheric pressure is April (1015.1mbar).
Average wind speed in December
Grono, Switzerland
- Average wind speed in December: 7km/h
The windiest month (with the highest average wind speed) is February (7.4km/h).
The calmest month (with the lowest average wind speed) is November (5.7km/h).
Average humidity in December
Grono, Switzerland
- Average humidity in December: 78%
The month with the highest relative humidity is November (83%).
The month with the lowest relative humidity is July (75%).
Average rainfall in December
Grono, Switzerland
- Average rainfall in December: 38mm
The wettest month (with the highest rainfall) is November (118mm).
The driest month (with the least rainfall) is January (15mm).
Average rainfall days in December
Grono, Switzerland
- Average rainfall days in December: 6.4 days
The month with the highest number of rainy days is June (15.9 days).
The month with the least rainy days is January (5.8 days).
Average snowfall in December
Grono, Switzerland
- Average snowfall in December: 3mm
The month with the highest snowfall is February (12mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in December
Grono, Switzerland
- Average snowfall days in December: 0.6 days
The month with the highest number of snowfall days is January (1.3 days).
The months with the least snowfall days are May, June, July, August and October (0 days).
Average daylight in December /
Average sunshine in December
Grono, Switzerland
- Average daylight in December: 8h and 4min
The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in December: 6h and 2min
The month with the most sunshine is July (Average sunshine: 11h and 30min).
The month with the least sunshine is November (Average sunshine: 5h and 30min).
Average sunshine days in December
Grono, Switzerland
- Average sunshine days in December: 23.5 days
The month with the most sunshine days is January (23.7 days).
The month with the least sunshine days is July (11.3 days).
Average UV index in December
Grono, Switzerland
- 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, March, October, November and December (UV index 2).
Average cloud cover in December
Grono, Switzerland
- Average cloud cover in December: 30
The month with the most cloud cover is November (Cloud cover 42).
The month with the least cloud cover is July (Cloud cover 25).
Average visibility in December
Grono, Switzerland
- Average visibility in December: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August and December (9km).
The months with the lowest visibility are September, October and November (8km).
Grono, Switzerland
Weather forecast for your location
2. Allow the app to use your location
