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
The advent of December brings a subtle shift in temperature, with the average high moving from a cool 52.5°F (11.4°C) in November to a chilly 43.9°F (6.6°C). In Montebello, December's nights observe an average temperature dip to a subzero cold 30.2°F (-1°C).Humidity
The average relative humidity in December is 78%.Rainfall
In Montebello, during December, the rain falls for 9.7 days and regularly aggregates up to 2.99" (76mm) of precipitation. In Montebello, during the entire year, the rain falls for 164.9 days and collects up to 33.7" (856mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In Montebello, in December, during 3.4 snowfall days, 2.8" (71mm) of snow is typically accumulated. In Montebello, during the entire year, snow falls for 23.9 days and aggregates up to 19.02" (483mm) of snow.Daylight
December has the shortest days of the year, with an average of 9h and 36min of daylight.On the first day of the month, sunrise is at 7:13 am and sunset at 4:57 pm. On the last day of December, sunrise is at 7:32 am and sunset at 5:07 pm EST.
Sunshine
With an average of 5h of sunshine, December has the least sunshine of the year.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 estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold does it get in December?
What is the average humidity in December?
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?
When are sunrise and sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Montebello have in December?
When is the lowest UV index in Montebello?
What is the UV index intensity in December?
Average temperature in December
Montebello, VA
- Average high temperature in December: 43.9°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (39°F).
- Average low temperature in December: 30.2°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (24.6°F).
Average pressure in December
Montebello, VA
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in December
Montebello, VA
- Average wind speed in December: 5.8mph
The windiest months (with the highest average wind speed) are February and April (6.9mph).
The calmest month (with the lowest average wind speed) is August (4.4mph).
Average humidity in December
Montebello, VA
- Average humidity in December: 78%
The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are January and July (74%).
Average rainfall in December
Montebello, VA
- Average rainfall in December: 2.99"
The wettest month (with the highest rainfall) is May (3.7").
The driest months (with the least rainfall) are January and November (2.09").
Average rainfall days in December
Montebello, VA
- Average rainfall days in December: 9.7 days
The month with the highest number of rainy days is May (19.3 days).
The month with the least rainy days is November (8.8 days).
Average snowfall in December
Montebello, VA
- Average snowfall in December: 2.8"
The month with the highest snowfall is March (4.92").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Montebello, VA
- Average snowfall days in December: 3.4 days
The month with the highest number of snowfall days is February (7.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Montebello, VA
- 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: 5h and 0min
The months with the most sunshine are June and July (Average sunshine: 10h and 12min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in December
Montebello, VA
- Average sunshine days in December: 18.4 days
The month with the most sunshine days is November (20 days).
The month with the least sunshine days is May (10.1 days).
Average UV index in December
Montebello, VA
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Montebello, VA
- Average cloud cover in December: 46
The month with the most cloud cover is March (Cloud cover 48).
The months with the least cloud cover are June and July (Cloud cover 34).
Average visibility in December
Montebello, VA
- Average visibility in December: 5mi
The months with the highest visibility are June, July and November (6mi).
The months with the lowest visibility are January, February, March, April, May, August, September, October and December (5mi).
Montebello, Virginia, USA
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