December weather forecastArvada, CO
December
Weather in December
The first month of the winter, December, is still a cold month in Arvada, Colorado, with temperature in the range of an average low of 20.7°F (-6.3°C) and an average high of 39.6°F (4.2°C).Temperature
December is the coldest month, with an average high-temperature of 39.6°F (4.2°C) and an average low-temperature of 20.7°F (-6.3°C).Humidity
In Arvada, the average relative humidity in December is 61%.Rainfall
In December, the rain falls for 5.2 days. Throughout December, 0.47" (12mm) of precipitation is accumulated. Throughout the year, there are 95 rainfall days, and 10.08" (256mm) of precipitation is accumulated.Snowfall
Months with snowfall in Arvada are January through May, October through December. In Arvada, during December, snow falls for 7.2 days and regularly aggregates up to 3.82" (97mm) of snow. 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, 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, in Arvada, Colorado, sunrise is at 7:21 am and sunset at 4:45 pm MST.
Sunshine
In Arvada, the average sunshine in December 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 of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for average individuals.Note: The maximum daily UV index of 2 in December converts into the following recommendations:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. It's recommended to limit sun exposure when its radiation is at its peak during midday. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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 24min
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).
