December weather forecastHamilton, CO
December
Weather in December
The first month of the winter, December, is still a freezing cold month in Hamilton, Colorado, with an average temperature varying between 28.9°F (-1.7°C) and 12.7°F (-10.7°C).Temperature
In Hamilton, entering December brings a temperature decrement, reducing from November's icy 41.4°F (5.2°C) to a freezing cold 28.9°F (-1.7°C). In Hamilton, the nighttime temperature averages to an extreme cold 12.7°F (-10.7°C) during December.Humidity
The average relative humidity in December is 80%.Rainfall
In Hamilton, in December, it is raining for 3.5 days, with typically 0.91" (23mm) of accumulated precipitation. Throughout the year, in Hamilton, there are 76.8 rainfall days, and 9.88" (251mm) of precipitation is accumulated.Snowfall
January through May, September through December are months with snowfall. December is the month with the most snowfall. Snow falls for 11.9 days and accumulates 7.28" (185mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 18min of daylight.On the first day of December, sunrise is at 7:14 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:33 am and sunset at 4:54 pm MST.
Sunshine
In December, the average sunshine in Hamilton is 6h.UV index
The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the average person.Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Hamilton, CO
- Average high temperature in December: 28.9°F
The warmest month (with the highest average high temperature) is July (82.4°F).
The month with the lowest average high temperature is January (28.8°F).
- Average low temperature in December: 12.7°F
The month with the highest average low temperature is July (51.8°F).
The coldest month (with the lowest average low temperature) is January (10.9°F).
Average pressure in December
Hamilton, CO
- Average pressure in December: 30.22"Hg
The month with the highest atmospheric pressure is January (30.27"Hg).
The months with the lowest atmospheric pressure are May and June (29.92"Hg).
Average wind speed in December
Hamilton, CO
- Average wind speed in December: 5.5mph
The windiest month (with the highest average wind speed) is April (7.9mph).
The calmest month (with the lowest average wind speed) is January (5.2mph).
Average humidity in December
Hamilton, CO
- Average humidity in December: 80%
The months with the highest relative humidity are January and February (84%).
The month with the lowest relative humidity is August (41%).
Average rainfall in December
Hamilton, CO
- Average rainfall in December: 0.91"
The wettest month (with the highest rainfall) is April (1.38").
The driest months (with the least rainfall) are August and September (0.39").
Average rainfall days in December
Hamilton, CO
- Average rainfall days in December: 3.5 days
The month with the highest number of rainy days is April (10.8 days).
The month with the least rainy days is January (3.1 days).
Average snowfall in December
Hamilton, CO
- Average snowfall in December: 7.28"
The month with the highest snowfall is December (7.28").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Hamilton, CO
- Average snowfall days in December: 11.9 days
The month with the highest number of snowfall days is February (13.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Hamilton, CO
- Average daylight in December: 9h and 18min
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 18min).
- Average sunshine in December: 6h and 0min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 18min).
Average sunshine days in December
Hamilton, CO
- Average sunshine days in December: 18.3 days
The month with the most sunshine days is June (22.8 days).
The month with the least sunshine days is February (13.3 days).
Average UV index in December
Hamilton, CO
- Average UV index in December: 2
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in December
Hamilton, CO
- Average cloud cover in December: 38
The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is September (Cloud cover 12).
Average visibility in December
Hamilton, CO
- Average visibility in December: 5mi
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January and February (4mi).
