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
In Arvada, the lowest temperatures are generally noted in December, averaging a high of 39.6°F (4.2°C) and a low of 20.7°F (-6.3°C).Humidity
In December, the average relative humidity in Arvada is 61%.Rainfall
In Arvada, during December, the rain falls for 5.2 days and regularly aggregates up to 0.47" (12mm) of precipitation. In Arvada, during the entire year, the rain falls for 95 days and collects up to 10.08" (256mm) of precipitation.Snowfall
January through May, October through December are months with snowfall in Arvada. In Arvada, Colorado, in December, during 7.2 snowfall days, 3.82" (97mm) of snow is typically accumulated. In Arvada, during the entire year, snow falls for 40.9 days and aggregates up to 32.17" (817mm) of snow.Daylight
December has the shortest days of the year in Arvada, Colorado, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 7:03 am and sunset at 4:36 pm. On the last day of December, sunrise is at 7:21 am and sunset at 4:45 pm MST.
Sunshine
In December, the average sunshine is 7h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for average individuals.Note: The daily high UV index of 2 in December translates into this advice:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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. Note well! The intensity of the Sun's UV rays can be nearly doubled by snow reflection.
Frequently asked questions
What is the coldest month in Arvada?
How cold is it in Arvada in December?
What is the average humidity in December in Arvada?
How much does it rain in Arvada in December?
How much does it snow in Arvada in December?
What is the month with the shortest days in Arvada?
What is the average length of the day in December in Arvada?
What time are sunrise and sunset in December in Arvada?
How many hours of sunshine does Arvada have in December?
When is the lowest UV index in Arvada?
How high is the UV index in December in Arvada?
Average temperature in December
Arvada, CO
- Average high temperature in December: 39.6°F
The warmest month (with the highest average high temperature) is July (85.1°F).
The month with the lowest average high temperature is December (39.6°F).
- Average low temperature in December: 20.7°F
The month with the highest average low temperature is July (59.5°F).
The coldest months (with the lowest average low temperature) are February and December (20.7°F).
Average pressure in December
Arvada, CO
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The months with the lowest atmospheric pressure are April and June (29.91"Hg).
Average wind speed in December
Arvada, CO
- Average wind speed in December: 5.8mph
The windiest months (with the highest average wind speed) are March and April (6.5mph).
The calmest month (with the lowest average wind speed) is September (5.6mph).
Average humidity in December
Arvada, CO
- Average humidity in December: 61%
The month with the highest relative humidity is February (66%).
The months with the lowest relative humidity are June and August (41%).
Average rainfall in December
Arvada, CO
- Average rainfall in December: 0.47"
The wettest month (with the highest rainfall) is May (1.69").
The driest month (with the least rainfall) is January (0.35").
Average rainfall days in December
Arvada, CO
- Average rainfall days in December: 5.2 days
The month with the highest number of rainy days is May (14.1 days).
The month with the least rainy days is November (3.3 days).
Average snowfall in December
Arvada, CO
- Average snowfall in December: 3.82"
The month with the highest snowfall is February (5.83").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Arvada, CO
- Average snowfall days in December: 7.2 days
The month with the highest number of snowfall days is February (8.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Arvada, CO
- Average daylight in December: 9h and 2min
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 24min).
- Average sunshine in December: 7h and 0min
The months with the most sunshine are June and July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 48min).
Average sunshine days in December
Arvada, CO
- Average sunshine days in December: 21.3 days
The month with the most sunshine days is November (23.9 days).
The month with the least sunshine days is July (13.5 days).
Average UV index in December
Arvada, CO
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Arvada, CO
- Average cloud cover in December: 21
The month with the most cloud cover is April (Cloud cover 25).
The month with the least cloud cover is September (Cloud cover 14).
Average visibility in December
Arvada, CO
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Arvada, Colorado, USA
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