December weather forecastGranite, CO
December
Weather in December
The first month of the winter, December, is also a subzero cold month in Granite, Colorado, with an average temperature ranging between min 2.7°F (-16.3°C) and max 23.5°F (-4.7°C).Temperature
December is the coldest month, with the temperature often reaching an average high of 23.5°F (-4.7°C) and an average low of 2.7°F (-16.3°C).Humidity
In Granite, the average relative humidity in December is 83%.Rainfall
In Granite, in December, it is raining for 6.6 days, with typically 1.26" (32mm) of accumulated precipitation. Throughout the year, there are 120.6 rainfall days, and 19.29" (490mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through December. In December, it is snowing for 17.9 days. Throughout December, 10.12" (257mm) of snow is accumulated. In Granite, during the entire year, snow falls for 142.6 days and aggregates up to 90.39" (2296mm) of snow.Daylight
The month with the shortest days is December, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 7:05 am and sunset at 4:43 pm. On the last day of December, sunrise is at 7:23 am and sunset at 4:52 pm MST.
Sunshine
In Granite, the average sunshine in December is 6h.UV index
The months with the lowest UV index are February and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum high UV index of 1 in December translates into the following recommendations:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Granite, CO
- Average high temperature in December: 23.5°F
The warmest month (with the highest average high temperature) is July (66.7°F).
The month with the lowest average high temperature is December (23.5°F).
- Average low temperature in December: 2.7°F
The month with the highest average low temperature is July (40.1°F).
The coldest months (with the lowest average low temperature) are January and December (2.7°F).
Average pressure in December
Granite, CO
- Average pressure in December: 30.16"Hg
The month with the highest atmospheric pressure is January (30.2"Hg).
The month with the lowest atmospheric pressure is April (29.94"Hg).
Average wind speed in December
Granite, CO
- Average wind speed in December: 6.4mph
The windiest month (with the highest average wind speed) is February (7mph).
The calmest months (with the lowest average wind speed) are July and August (4.6mph).
Average humidity in December
Granite, 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 (51%).
Average rainfall in December
Granite, CO
- Average rainfall in December: 1.26"
The wettest month (with the highest rainfall) is July (2.83").
The driest month (with the least rainfall) is November (0.91").
Average rainfall days in December
Granite, CO
- Average rainfall days in December: 6.6 days
The month with the highest number of rainy days is July (20.3 days).
The month with the least rainy days is November (3.9 days).
Average snowfall in December
Granite, CO
- Average snowfall in December: 10.12"
The month with the highest snowfall is March (15.08").
The month with the least snowfall is August (0.31").
Average snowfall days in December
Granite, CO
- Average snowfall days in December: 17.9 days
The month with the highest number of snowfall days is March (20 days).
The month with the least snowfall days is August (1.3 days).
Average daylight in December /
Average sunshine in December
Granite, CO
- Average daylight in December: 9h and 30min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 6h and 0min
The month with the most sunshine is June (Average sunshine: 11h and 36min).
The month with the least sunshine is February (Average sunshine: 5h and 42min).
Average sunshine days in December
Granite, CO
- Average sunshine days in December: 12.6 days
The month with the most sunshine days is November (17.8 days).
The month with the least sunshine days is April (6.1 days).
Average UV index in December
Granite, CO
- Average UV index in December: 1
The month with the highest UV index is July (UV index 4).
The months with the lowest UV index are February and December (UV index 1).
Average cloud cover in December
Granite, CO
- Average cloud cover in December: 42
The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is June (Cloud cover 17).
Average visibility in December
Granite, CO
- Average visibility in December: 4mi
The months with the highest visibility are May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (4mi).
