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 transition into December marks the average high-temperature at a frosty 9.6°C (49.3°F), differing minimally from November's 11.2°C (52.2°F). Colby's nighttime temperature in December shows a minor descent, with a steady average of 7.6°C (45.7°F).Humidity
In Colby, the average relative humidity in December is 78%.Rainfall
In Colby, during December, the rain falls for 17.3 days and regularly aggregates up to 49mm (1.93") of precipitation. In Colby, during the entire year, the rain falls for 184.8 days and collects up to 478mm (18.82") of precipitation.Snowfall
January through March, November and December are months with snowfall. The months with the most snowfall are January and December, with an average 5mm (0.2") of accumulated snow.Daylight
The month with the shortest days is December, with an average of 7h and 30min of daylight.On the first day of the month, sunrise is at 08:15 and sunset at 16:00. On the last day of December, sunrise is at 08:38 and sunset at 16:05 GMT.
Sunshine
January, November and December, with an average of 3.9h of sunshine, are months with the least sunshine in Colby, Isle of Man.UV index
In Colby, the average daily maximum UV index in December is 3. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to UV radiation for average individuals.Note: A daily high UV index of 3 in December leads to these guidelines:
Act with care - The need to guard against sun damage is communicated. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Colby in December?
What is the average humidity in December in Colby?
How much does it rain in Colby in December?
When does it snow the most in Colby?
How many days does it snow in December in Colby?
What is the month with the shortest days in Colby?
What is the average length of the day in December in Colby?
What time are sunrise and sunset in December in Colby?
What is the month with the least sunshine in Colby?
How long on average sun shines in December in Colby?
How high is the UV index in December in Colby?
Average temperature in December
Colby, Isle of Man
- Average high temperature in December: 9.6°C
The warmest month (with the highest average high temperature) is August (16.1°C).
The month with the lowest average high temperature is February (7.8°C).
- Average low temperature in December: 7.6°C
The month with the highest average low temperature is August (14.3°C).
The coldest month (with the lowest average low temperature) is February (5.9°C).
Average pressure in December
Colby, Isle of Man
- Average pressure in December: 1010.5mbar
The month with the highest atmospheric pressure is May (1015.9mbar).
The month with the lowest atmospheric pressure is November (1008mbar).
Average wind speed in December
Colby, Isle of Man
- Average wind speed in December: 36.7km/h
The windiest month (with the highest average wind speed) is December (36.7km/h).
The calmest month (with the lowest average wind speed) is June (21.5km/h).
Average humidity in December
Colby, Isle of Man
- Average humidity in December: 78%
The months with the highest relative humidity are June and July (84%).
The month with the lowest relative humidity is November (77%).
Average rainfall in December
Colby, Isle of Man
- Average rainfall in December: 49mm
The wettest month (with the highest rainfall) is November (62mm).
The driest month (with the least rainfall) is April (23mm).
Average rainfall days in December
Colby, Isle of Man
- Average rainfall days in December: 17.3 days
The month with the highest number of rainy days is November (17.8 days).
The months with the least rainy days are May and June (13.2 days).
Average snowfall in December
Colby, Isle of Man
- Average snowfall in December: 5mm
The months with the highest snowfall are January and December (5mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in December
Colby, Isle of Man
- Average snowfall days in December: 0.5 days
The month with the highest number of snowfall days is February (0.8 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
Colby, Isle of Man
- Average daylight in December: 7h and 3min
The month with the longest days is June (Average daylight: 17h and 6min).
The month with the shortest days is December (Average daylight: 7h and 30min).
- Average sunshine in December: 3h and 5min
The month with the most sunshine is May (Average sunshine: 8h and 18min).
The months with the least sunshine are January, November and December (Average sunshine: 3h and 54min).
Average sunshine days in December
Colby, Isle of Man
- Average sunshine days in December: 11 days
The month with the most sunshine days is May (16.3 days).
The month with the least sunshine days is November (9 days).
Average UV index in December
Colby, Isle of Man
- Average UV index in December: 3
The months with the highest UV index are May, June, July, August and September (UV index 4).
The months with the lowest UV index are January, February and March (UV index 2).
Average cloud cover in December
Colby, Isle of Man
- Average cloud cover in December: 61
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is May (Cloud cover 46).
Average visibility in December
Colby, Isle of Man
- 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).
Colby, Isle of Man
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