December weather forecastProspect Valley, CO
December
Weather in December
The first month of the winter, December, is still a cold month in Prospect Valley, Colorado, with an average temperature fluctuating between 21.4°F (-5.9°C) and 40.1°F (4.5°C).Temperature
December is the coldest month of the year, registering average temperatures as high as 40.1°F (4.5°C) and as low as 21.4°F (-5.9°C).Humidity
In Prospect Valley, the average relative humidity in December is 61%.Rainfall
December is the month with the least rainfall. Rain falls for 2 days and accumulates 0.16" (4mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Prospect Valley, in December, during 4.3 snowfall days, 0.91" (23mm) of snow is typically accumulated. In Prospect Valley, Colorado, during the entire year, snow falls for 32 days and aggregates up to 15.35" (390mm) of snow.Daylight
December has the shortest days of the year in Prospect Valley, Colorado, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 7:01 am and sunset at 4:32 pm. On the last day of December, sunrise is at 7:19 am and sunset at 4:42 pm MST.
Sunshine
In Prospect Valley, the average sunshine in December is 6.7h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for average individuals.Note: The daily high UV index of 2 during December translates into the following recommendations:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Sunglasses that ward off UVA and UVB rays play a pivotal role in reducing solar eye damage. Be watchful! The reflection of snow can enhance the intensity of the Sun's UV radiation nearly double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Prospect Valley, CO
- Average high temperature in December: 40.1°F
The warmest month (with the highest average high temperature) is July (87.6°F).
The month with the lowest average high temperature is December (40.1°F).
- Average low temperature in December: 21.4°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is December (21.4°F).
Average pressure in December
Prospect Valley, CO
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in December
Prospect Valley, CO
- Average wind speed in December: 6.5mph
The windiest month (with the highest average wind speed) is April (8.1mph).
The calmest months (with the lowest average wind speed) are September and December (6.5mph).
Average humidity in December
Prospect Valley, CO
- Average humidity in December: 61%
The months with the highest relative humidity are January and February (64%).
The months with the lowest relative humidity are August and September (42%).
Average rainfall in December
Prospect Valley, CO
- Average rainfall in December: 0.16"
The wettest month (with the highest rainfall) is May (1.57").
The driest month (with the least rainfall) is December (0.16").
Average rainfall days in December
Prospect Valley, CO
- Average rainfall days in December: 2 days
The month with the highest number of rainy days is July (12.6 days).
The month with the least rainy days is January (1.4 days).
Average snowfall in December
Prospect Valley, CO
- Average snowfall in December: 0.91"
The month with the highest snowfall is February (2.36").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Prospect Valley, CO
- Average snowfall days in December: 4.3 days
The month with the highest number of snowfall days is February (6.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Prospect Valley, CO
- Average daylight in December: 9h and 24min
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 42min
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 36min).
Average sunshine days in December
Prospect Valley, CO
- Average sunshine days in December: 26.4 days
The month with the most sunshine days is December (26.4 days).
The month with the least sunshine days is July (13 days).
Average UV index in December
Prospect Valley, 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
Prospect Valley, CO
- Average cloud cover in December: 24
The month with the most cloud cover is April (Cloud cover 28).
The months with the least cloud cover are June and September (Cloud cover 16).
Average visibility in December
Prospect Valley, 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).
