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
Granby, Colorado, experiences its lowest average temperatures in December, reaching a peak of 24.6°F (-4.1°C) and a minimum of 5°F (-15°C).Humidity
In December, the average relative humidity in Granby is 83%.Rainfall
In Granby, Colorado, during December, the rain falls for 7.4 days and regularly aggregates up to 0.67" (17mm) of precipitation. In Granby, Colorado, during the entire year, the rain falls for 96.3 days and collects up to 11.54" (293mm) of precipitation.Snowfall
Months with snowfall in Granby are January through June, August through December. In Granby, during December, snow falls for 13.4 days and regularly aggregates up to 5.12" (130mm) of snow. In Granby, during the entire year, snow falls for 110.7 days and aggregates up to 59.88" (1521mm) of snow.Daylight
The month with the shortest days in Granby is December, with an average of 9h and 24min of daylight.On the first day of December, sunrise is at 7:07 am and sunset at 4:38 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 4:48 pm MST.
Sunshine
The average sunshine in December is 6.4h.UV index
The months with the lowest UV index in Granby are January through April, October through December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: In December, the maximum UV index of 2 transforms into these recommendations:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Stay sun-safe with clothing that is both closely woven and worn loosely. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Frequently asked questions
What is the coldest month in Granby?
How cold is it in Granby in December?
What is the average humidity in December in Granby?
How many days does it rain in December in Granby?
How much does it snow in Granby in December?
What is the month with the shortest days in Granby?
What is the average length of the day in December in Granby?
When are sunrise and sunset in December in Granby?
How many hours of sunshine does Granby have in December?
What is the month with the lowest UV index in Granby?
What is the UV index intensity in December in Granby?
Average temperature in December
Granby, CO
- Average high temperature in December: 24.6°F
The warmest month (with the highest average high temperature) is July (72.3°F).
The month with the lowest average high temperature is December (24.6°F).
- Average low temperature in December: 5°F
The month with the highest average low temperature is July (43.7°F).
The coldest month (with the lowest average low temperature) is January (4.3°F).
Average pressure in December
Granby, CO
- Average pressure in December: 30.16"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The months with the lowest atmospheric pressure are April, May and June (29.93"Hg).
Average wind speed in December
Granby, CO
- Average wind speed in December: 6.2mph
The windiest month (with the highest average wind speed) is February (7mph).
The calmest month (with the lowest average wind speed) is August (5mph).
Average humidity in December
Granby, CO
- Average humidity in December: 83%
The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is June (49%).
Average rainfall in December
Granby, CO
- Average rainfall in December: 0.67"
The wettest month (with the highest rainfall) is May (1.73").
The driest month (with the least rainfall) is August (0.55").
Average rainfall days in December
Granby, CO
- Average rainfall days in December: 7.4 days
The month with the highest number of rainy days is May (12.8 days).
The month with the least rainy days is October (4.9 days).
Average snowfall in December
Granby, CO
- Average snowfall in December: 5.12"
The month with the highest snowfall is April (10.94").
The month with the least snowfall is July (0").
Average snowfall days in December
Granby, CO
- Average snowfall days in December: 13.4 days
The month with the highest number of snowfall days is February (16.1 days).
The month with the least snowfall days is July (0 days).
Average daylight in December /
Average sunshine in December
Granby, CO
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in December: 6h and 2min
The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 6h and 12min).
Average sunshine days in December
Granby, CO
- Average sunshine days in December: 16.8 days
The months with the most sunshine days are September and November (19.5 days).
The month with the least sunshine days is May (9.5 days).
Average UV index in December
Granby, CO
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 4).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).
Average cloud cover in December
Granby, CO
- Average cloud cover in December: 36
The month with the most cloud cover is February (Cloud cover 41).
The month with the least cloud cover is September (Cloud cover 15).
Average visibility in December
Granby, CO
- Average visibility in December: 5mi
The months with the highest visibility are May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March, April and December (5mi).
Granby, Colorado, USA
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