December weather forecastNelson, CO
December
Weather in December
The first month of the winter, December, is also an icy month in Nelson, Colorado, with an average temperature ranging between min 22.5°F (-5.3°C) and max 38.7°F (3.7°C).Temperature
December is Nelson's coldest month, registering average high temperatures of 38.7°F (3.7°C) and lows of 22.5°F (-5.3°C).Humidity
The average relative humidity in December in Nelson is 63%.Rainfall
January and December are months with the least rain when the rain falls for 5 days and typically aggregates up to 0.39" (10mm) of rain.Snowfall
Months with snowfall are January through May, October through December. In December, it is snowing for 5.8 days. Throughout December, 1.65" (42mm) of snow is accumulated. Throughout the year, there are 33.8 snowfall days, and 12.83" (326mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 6:58 am and sunset at 4:29 pm. On the last day of December, sunrise is at 7:17 am and sunset at 4:38 pm MST.
Sunshine
The months with the least sunshine are February and December, with an average of 6.5h of sunshine.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 value of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index of 2 during December translates into these guidelines:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. For skin protection, it's recommended to minimize Sun exposure during its peak hours around midday. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Be aware! The reflective nature of snow can magnify the Sun's UV radiation almost twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Nelson, CO
- Average high temperature in December: 38.7°F
The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is December (38.7°F).
- Average low temperature in December: 22.5°F
The month with the highest average low temperature is July (65.3°F).
The coldest month (with the lowest average low temperature) is December (22.5°F).
Average pressure in December
Nelson, CO
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in December
Nelson, CO
- Average wind speed in December: 7.8mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is December (7.8mph).
Average humidity in December
Nelson, CO
- Average humidity in December: 63%
The month with the highest relative humidity is January (64%).
The months with the lowest relative humidity are August and September (45%).
Average rainfall in December
Nelson, CO
- Average rainfall in December: 0.39"
The wettest month (with the highest rainfall) is May (2.2").
The driest months (with the least rainfall) are January and December (0.39").
Average rainfall days in December
Nelson, CO
- Average rainfall days in December: 5 days
The month with the highest number of rainy days is July (14.4 days).
The month with the least rainy days is November (2.9 days).
Average snowfall in December
Nelson, CO
- Average snowfall in December: 1.65"
The month with the highest snowfall is February (2.64").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Nelson, CO
- Average snowfall days in December: 5.8 days
The month with the highest number of snowfall days is February (8.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Nelson, 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 30min
The months with the most sunshine are June, July and August (Average sunshine: 11h and 48min).
The months with the least sunshine are February and December (Average sunshine: 6h and 30min).
Average sunshine days in December
Nelson, CO
- Average sunshine days in December: 22.8 days
The month with the most sunshine days is November (23.4 days).
The month with the least sunshine days is July (12.8 days).
Average UV index in December
Nelson, 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
Nelson, CO
- Average cloud cover in December: 28
The month with the most cloud cover is February (Cloud cover 31).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility in December
Nelson, 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).
