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
Onset of December comes with a temperature decline, the average high falling from a frosty 43.7°F (6.5°C) in November to a subzero cold 31.6°F (-0.2°C). During the nights in December, the temperature averages to a still freezing cold 17.4°F (-8.1°C).Humidity
In Arvada, the average relative humidity in December is 71%.Rainfall
In December, the rain falls for 2.5 days. Throughout December, 0.31" (8mm) of precipitation is accumulated. In Arvada, during the entire year, the rain falls for 99.8 days and collects up to 11.61" (295mm) of precipitation.Snowfall
Months with snowfall are January through June, September through December. In December, in Arvada, it is snowing for 6.4 days. Throughout December, 1.26" (32mm) of snow is accumulated. Throughout the year, there are 44.9 snowfall days, and 18.23" (463mm) of snow is accumulated.Daylight
December has the shortest days of the year in Arvada, with an average of 8h and 54min of daylight.On the first day of December in Arvada, sunrise is at 7:22 am and sunset at 4:25 pm. On the last day of the month, sunrise is at 7:41 am and sunset at 4:34 pm MST.
Sunshine
In Arvada, the average sunshine in December is 6.4h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Arvada. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.Note: In December, the maximum UV index of 2 translates into these guidelines:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Arvada?
What is the average humidity in December in Arvada?
How many days does it rain in December in Arvada?
How many days does it snow in December in Arvada?
What is the month with the shortest days in Arvada?
How many hours of daylight does Arvada have in December?
What time are sunrise and sunset in December in Arvada?
How many hours of sunshine does Arvada have in December?
What is the month with the lowest UV index in Arvada?
How high is the UV index in December in Arvada?
Average temperature in December
Arvada, WY
- Average high temperature in December: 31.6°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is February (31.5°F).
- Average low temperature in December: 17.4°F
The month with the highest average low temperature is July (63.5°F).
The coldest month (with the lowest average low temperature) is February (16.2°F).
Average pressure in December
Arvada, WY
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in December
Arvada, WY
- Average wind speed in December: 7.8mph
The windiest month (with the highest average wind speed) is April (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (7.5mph).
Average humidity in December
Arvada, WY
- Average humidity in December: 71%
The month with the highest relative humidity is February (76%).
The month with the lowest relative humidity is August (38%).
Average rainfall in December
Arvada, WY
- Average rainfall in December: 0.31"
The wettest month (with the highest rainfall) is May (2.8").
The driest month (with the least rainfall) is January (0.24").
Average rainfall days in December
Arvada, WY
- Average rainfall days in December: 2.5 days
The month with the highest number of rainy days is May (16.1 days).
The month with the least rainy days is December (2.5 days).
Average snowfall in December
Arvada, WY
- Average snowfall in December: 1.26"
The month with the highest snowfall is April (3.46").
The months with the least snowfall are July and August (0").
Average snowfall days in December
Arvada, WY
- Average snowfall days in December: 6.4 days
The month with the highest number of snowfall days is November (7.5 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Arvada, WY
- Average daylight in December: 8h and 5min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in December: 6h and 2min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 12min).
Average sunshine days in December
Arvada, WY
- Average sunshine days in December: 23.4 days
The month with the most sunshine days is January (23.5 days).
The month with the least sunshine days is May (11 days).
Average UV index in December
Arvada, WY
- Average UV index in December: 2
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Arvada, WY
- Average cloud cover in December: 33
The month with the most cloud cover is February (Cloud cover 37).
The months with the least cloud cover are July and August (Cloud cover 15).
Average visibility in December
Arvada, WY
- 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, Wyoming, USA
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