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
Welcoming December, Monticello observes a shift in the average high-temperature, falling from November's frosty 47.5°F (8.6°C) to a wintry 35.2°F (1.8°C). Monticello's December nights cool down to an average low-temperature of 20.8°F (-6.2°C).Humidity
In Monticello, the average relative humidity in December is 69%.Rainfall
In December, in Monticello, the rain falls for 5 days. Throughout December, 1.1" (28mm) of precipitation is accumulated. In Monticello, during the entire year, the rain falls for 94.8 days and collects up to 12.72" (323mm) of precipitation.Snowfall
Months with snowfall are January through May, September through December. December is the month with the most snowfall in Monticello. Snow falls for 10.3 days and accumulates 8.62" (219mm) of snow.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 7:14 am and sunset at 4:58 pm. On the last day of the month, sunrise is at 7:32 am and sunset at 5:08 pm MST.
Sunshine
In Monticello, the average sunshine in December is 6.5h.UV index
The months with the lowest UV index in Monticello are January, February, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for average individuals.Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. The midday Sun can be dangerous due to its intense radiation; always find shade and reduce exposure. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Frequently asked questions
How cold is it in Monticello in December?
What is the average humidity in December in Monticello?
How many days does it rain in December in Monticello?
What is the snowiest month in Monticello?
How many days does it snow in December in Monticello?
What is the month with the shortest days in Monticello?
What is the average length of the day in December in Monticello?
When is the sunrise / sunset in December in Monticello?
How many hours of sunshine does Monticello have in December?
When is the lowest UV index in Monticello?
What is the UV index intensity in December in Monticello?
Average temperature in December
Monticello, UT
- Average high temperature in December: 35.2°F
The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (33.8°F).
- Average low temperature in December: 20.8°F
The month with the highest average low temperature is July (63.1°F).
The coldest month (with the lowest average low temperature) is January (19.2°F).
Average pressure in December
Monticello, UT
- Average pressure in December: 30.16"Hg
The month with the highest atmospheric pressure is January (30.23"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed in December
Monticello, UT
- Average wind speed in December: 6.2mph
The windiest month (with the highest average wind speed) is April (9.6mph).
The calmest month (with the lowest average wind speed) is January (5.8mph).
Average humidity in December
Monticello, UT
- Average humidity in December: 69%
The month with the highest relative humidity is January (76%).
The month with the lowest relative humidity is June (25%).
Average rainfall in December
Monticello, UT
- Average rainfall in December: 1.1"
The wettest month (with the highest rainfall) is July (1.89").
The driest month (with the least rainfall) is June (0.59").
Average rainfall days in December
Monticello, UT
- Average rainfall days in December: 5 days
The month with the highest number of rainy days is July (16.6 days).
The month with the least rainy days is November (2.9 days).
Average snowfall in December
Monticello, UT
- Average snowfall in December: 8.62"
The month with the highest snowfall is December (8.62").
The months with the least snowfall are June, July and August (0").
Average snowfall days in December
Monticello, UT
- Average snowfall days in December: 10.3 days
The month with the highest number of snowfall days is December (10.3 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Monticello, UT
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 6h and 3min
The month with the most sunshine is June (Average sunshine: 12h and 0min).
The month with the least sunshine is January (Average sunshine: 6h and 24min).
Average sunshine days in December
Monticello, UT
- Average sunshine days in December: 19.7 days
The month with the most sunshine days is November (22.9 days).
The month with the least sunshine days is July (9.6 days).
Average UV index in December
Monticello, UT
- 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
Monticello, UT
- Average cloud cover in December: 29
The month with the most cloud cover is December (Cloud cover 29).
The month with the least cloud cover is June (Cloud cover 11).
Average visibility in December
Monticello, UT
- Average visibility in December: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
Monticello, Utah, USA
Weather forecast for your location
2. Allow the app to use your location
