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, with an average high-temperature of 43.7°F (6.5°C) and an average low-temperature of 26.4°F (-3.1°C).Humidity
In Hartman, the average relative humidity in December is 57%.Rainfall
In Hartman, in December, during 3.7 rainfall days, 0.35" (9mm) of precipitation is typically accumulated. Throughout the year, there are 79.5 rainfall days, and 8.9" (226mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Hartman, Colorado, during December, snow falls for 3.5 days and regularly aggregates up to 1.02" (26mm) of snow. Throughout the year, there are 19.6 snowfall days, and 7.09" (180mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 36min of daylight.On the first day of December, sunrise is at 6:47 am and sunset at 4:29 pm. On the last day of the month, sunrise is at 7:05 am and sunset at 4:39 pm MST.
Sunshine
The average sunshine in December in Hartman is 6.8h.UV index
January, 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 low threat to health 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:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What time of the year is the coldest?
How cold is it in December?
What is the average humidity in December?
How much does it rain in December?
How many days does it snow in December?
What is the month with the shortest days in Hartman?
What is the average length of the day in December?
When is the sunrise / sunset in December?
How many hours of sunshine does Hartman have in December?
What are the months with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Hartman, CO
- Average high temperature in December: 43.7°F
The warmest month (with the highest average high temperature) is July (92.7°F).
The month with the lowest average high temperature is December (43.7°F).
- Average low temperature in December: 26.4°F
The month with the highest average low temperature is July (71.1°F).
The coldest month (with the lowest average low temperature) is December (26.4°F).
Average pressure in December
Hartman, CO
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is January (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.8"Hg).
Average wind speed in December
Hartman, CO
- Average wind speed in December: 9.1mph
The windiest month (with the highest average wind speed) is April (12.2mph).
The calmest month (with the lowest average wind speed) is January (8.9mph).
Average humidity in December
Hartman, CO
- Average humidity in December: 57%
The month with the highest relative humidity is January (59%).
The month with the lowest relative humidity is June (40%).
Average rainfall in December
Hartman, CO
- Average rainfall in December: 0.35"
The wettest month (with the highest rainfall) is July (1.54").
The driest month (with the least rainfall) is November (0.28").
Average rainfall days in December
Hartman, CO
- Average rainfall days in December: 3.7 days
The month with the highest number of rainy days is July (11.8 days).
The month with the least rainy days is November (2.5 days).
Average snowfall in December
Hartman, CO
- Average snowfall in December: 1.02"
The month with the highest snowfall is February (1.93").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Hartman, CO
- Average snowfall days in December: 3.5 days
The month with the highest number of snowfall days is February (5.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Hartman, CO
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 6h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 36min).
Average sunshine days in December
Hartman, CO
- Average sunshine days in December: 24.9 days
The month with the most sunshine days is November (25.2 days).
The month with the least sunshine days is July (17.3 days).
Average UV index in December
Hartman, CO
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, November and December (UV index 2).
Average cloud cover in December
Hartman, CO
- Average cloud cover in December: 23
The months with the most cloud cover are February and April (Cloud cover 25).
The months with the least cloud cover are June and September (Cloud cover 14).
Average visibility in December
Hartman, 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).
Hartman, Colorado, USA
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