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
December is the coldest month, exhibiting average temperatures of 40.8°F (4.9°C) at the peak and 21.2°F (-6°C) at the base.Humidity
The average relative humidity in December is 62%.Rainfall
The month with the least rainfall is December, when the rain falls for 2.6 days and typically collects 0.12" (3mm) of precipitation.Snowfall
January through May, October through December are months with snowfall. In Brighton, in December, during 4.5 snowfall days, 0.75" (19mm) of snow is typically accumulated. In Brighton, during the entire year, snow falls for 30.9 days and aggregates up to 11.42" (290mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 24min of daylight.On the first day of the month, sunrise is at 7:02 am and sunset at 4:34 pm. On the last day of December, sunrise is at 7:20 am and sunset at 4:44 pm MST.
Sunshine
The average sunshine in December is 6.8h.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 unprotected exposure to Sun's UV rays for ordinary individuals.Note: During December, 2 as the daily maximum UV index converts into the following advice:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What part of the year is the coldest?
How cold is December?
What is the average humidity in December?
What is the driest month?
How many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
What time are sunrise and sunset in December?
How long on average sun shines in December?
When is the lowest UV index?
How high is the UV index in December?
Average temperature in December
Brighton, CO
- Average high temperature in December: 40.8°F
The warmest month (with the highest average high temperature) is July (88.9°F).
The month with the lowest average high temperature is December (40.8°F).
- Average low temperature in December: 21.2°F
The month with the highest average low temperature is July (61.9°F).
The coldest month (with the lowest average low temperature) is December (21.2°F).
Average pressure in December
Brighton, 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 (29.9"Hg).
Average wind speed in December
Brighton, CO
- Average wind speed in December: 6mph
The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is December (6mph).
Average humidity in December
Brighton, CO
- Average humidity in December: 62%
The months with the highest relative humidity are January and February (64%).
The month with the lowest relative humidity is August (40%).
Average rainfall in December
Brighton, CO
- Average rainfall in December: 0.12"
The wettest month (with the highest rainfall) is May (0.98").
The driest month (with the least rainfall) is December (0.12").
Average rainfall days in December
Brighton, CO
- Average rainfall days in December: 2.6 days
The month with the highest number of rainy days is May (10.8 days).
The month with the least rainy days is December (2.6 days).
Average snowfall in December
Brighton, CO
- Average snowfall in December: 0.75"
The month with the highest snowfall is February (1.89").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Brighton, CO
- Average snowfall days in December: 4.5 days
The month with the highest number of snowfall days is February (6.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Brighton, CO
- Average daylight in December: 9h and 2min
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 5min
The months with the most sunshine are June and July (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 6h and 36min).
Average sunshine days in December
Brighton, CO
- Average sunshine days in December: 25.8 days
The month with the most sunshine days is December (25.8 days).
The month with the least sunshine days is July (14.8 days).
Average UV index in December
Brighton, 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
Brighton, CO
- Average cloud cover in December: 25
The month with the most cloud cover is April (Cloud cover 28).
The months with the least cloud cover are June, August and September (Cloud cover 16).
Average visibility in December
Brighton, 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).
Brighton, Colorado, USA
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