December weather forecastNorthglenn, CO
December
Weather in December
December arrives with real winter weather, promising a white Christmas ahead in Northglenn. The temperatures drop further, reminiscent of January's lows. The city receives its most significant snowfall events making it a paradise for snow lovers. Daylight hours are the shortest during the year, lending a cozy winter vibe to the city. It's a fantastic time to engage in winter sports or relax indoors with a hot cup of cocoa.Temperature
In Northglenn, Colorado, the lowest average temperatures are observed in December, with a high of 41.2°F (5.1°C) and a low of 21.9°F (-5.6°C).Humidity
The average relative humidity in December is 60%.Rainfall
The months with the least rainfall in Northglenn are January and December Rain falls for 1.7 days and accumulates 0.08" (2mm) of rain.Snowfall
January through May, October through December are months with snowfall in Northglenn, Colorado. In December, in Northglenn, it is snowing for 2 days. Throughout December, 0.55" (14mm) of snow is accumulated. In Northglenn, Colorado, during the entire year, snow falls for 19.6 days and aggregates up to 8.5" (216mm) of snow.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:02 am and sunset at 4:35 pm. On the last day of December, in Northglenn, Colorado, sunrise is at 7:21 am and sunset at 4:45 pm MST.
Sunshine
The average sunshine in December in Northglenn is 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 value of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 2 during December translates into the following guidance:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. For excellent sun protection for the eyes, ears, face, and neck, consider a wide-brim hat. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Northglenn, CO
- Average high temperature in December: 41.2°F
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is December (41.2°F).
- Average low temperature in December: 21.9°F
The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is December (21.9°F).
Average pressure in December
Northglenn, 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
Northglenn, CO
- Average wind speed in December: 5.8mph
The windiest month (with the highest average wind speed) is April (6.9mph).
The calmest month (with the lowest average wind speed) is December (5.8mph).
Average humidity in December
Northglenn, CO
- Average humidity in December: 60%
The month with the highest relative humidity is February (64%).
The month with the lowest relative humidity is August (39%).
Average rainfall in December
Northglenn, CO
- Average rainfall in December: 0.08"
The wettest month (with the highest rainfall) is July (0.59").
The driest months (with the least rainfall) are January and December (0.08").
Average rainfall days in December
Northglenn, CO
- Average rainfall days in December: 1.7 days
The month with the highest number of rainy days is July (8.2 days).
The month with the least rainy days is February (1.2 days).
Average snowfall in December
Northglenn, CO
- Average snowfall in December: 0.55"
The month with the highest snowfall is October (1.42").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Northglenn, CO
- Average snowfall days in December: 2 days
The month with the highest number of snowfall days is February (4.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Northglenn, 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: 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 42min).
Average sunshine days in December
Northglenn, CO
- Average sunshine days in December: 28.5 days
The month with the most sunshine days is December (28.5 days).
The month with the least sunshine days is July (19.6 days).
Average UV index in December
Northglenn, 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
Northglenn, CO
- Average cloud cover in December: 22
The months with the most cloud cover are February, April and May (Cloud cover 25).
The month with the least cloud cover is September (Cloud cover 14).
Average visibility in December
Northglenn, 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).
