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
December
Weather in December
Temperature
December is the coldest month, with the temperature often reaching an average high of 39.9°F (4.4°C) and an average low of 20.7°F (-6.3°C).Humidity
In Platteville, the average relative humidity in December is 63%.Rainfall
January and December are months with the least rain when the rain falls for 3.1 days and typically aggregates up to 0.12" (3mm) of rain.Snowfall
Months with snowfall are January through May, October through December. In Platteville, Colorado, in December, snow falls for 4.5 days, with typically accumulated 0.83" (21mm) of snow. Throughout the year, there are 29.6 snowfall days, and 10.2" (259mm) 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 7:03 am and sunset at 4:33 pm. On the last day of December, sunrise is at 7:21 am and sunset at 4:43 pm MST.
Sunshine
The average sunshine in December is 6.9h.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 low health risk from unprotected exposure to Sun's UV rays for average individuals.Note: A maximum daily UV index of 2 during December morphs into the following directions:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Tightly woven clothing, when worn loosely, shields effectively against the Sun. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest time of year?
How cold is December?
What is the average humidity in December?
What is the driest month?
How much does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Platteville have in December?
When are sunrise and sunset in December?
How many hours of sunshine does Platteville have in December?
When is the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Platteville, CO
- Average high temperature in December: 39.9°F
The warmest month (with the highest average high temperature) is July (89.2°F).
The month with the lowest average high temperature is December (39.9°F).
- Average low temperature in December: 20.7°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is December (20.7°F).
Average pressure in December
Platteville, CO
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in December
Platteville, CO
- Average wind speed in December: 5.5mph
The windiest month (with the highest average wind speed) is April (7.4mph).
The calmest month (with the lowest average wind speed) is December (5.5mph).
Average humidity in December
Platteville, CO
- Average humidity in December: 63%
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
Platteville, CO
- Average rainfall in December: 0.12"
The wettest month (with the highest rainfall) is May (0.67").
The driest months (with the least rainfall) are January and December (0.12").
Average rainfall days in December
Platteville, CO
- Average rainfall days in December: 3.1 days
The month with the highest number of rainy days is May (10 days).
The months with the least rainy days are January and November (3 days).
Average snowfall in December
Platteville, CO
- Average snowfall in December: 0.83"
The month with the highest snowfall is February (1.73").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Platteville, CO
- Average snowfall days in December: 4.5 days
The month with the highest number of snowfall days is February (6.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Platteville, 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 month with the most sunshine is June (Average sunshine: 12h and 0min).
The month with the least sunshine is February (Average sunshine: 6h and 42min).
Average sunshine days in December
Platteville, CO
- Average sunshine days in December: 26.3 days
The month with the most sunshine days is December (26.3 days).
The month with the least sunshine days is July (17.3 days).
Average UV index in December
Platteville, 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
Platteville, CO
- Average cloud cover in December: 24
The months with the most cloud cover are February and April (Cloud cover 27).
The months with the least cloud cover are June and September (Cloud cover 15).
Average visibility in December
Platteville, 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).